When Adam and Eve walked with God in the Garden of Eden they had no sin and therefore had no need to offer blood sacrifices to atone for sin. However, after they sinned against God and were cast out of the garden, God at some point encouraged them that they should offer sacrifices as a covering to show repentance for the sin that they had committed. Their sons did offer sacrifices. Imagine the shame and guilt that the family had knowing that the parents had sinned so greatly against God.
Gen 4:3 And in the end of days, it happened, Cain brought to Jehovah an offering of the fruit of the ground.
Gen 4:4 And Abel also brought of the firstlings of his flock and of the fat of it. And Jehovah had respect to Abel and to his offering,
Gen 4:5 but He did not have respect to Cain and to his offering. And Cain glowed with anger, and his face fell.
Heb 11:4 By faith Abel offered to God a more excellent sacrifice than Cain, by which he obtained witness that he was righteous, God testifying of his gifts. And by it he, being dead, yet speaks.
Gen 9:1 And God blessed Noah and his sons. And He said to them, Be fruitful and multiply, and fill the earth.
Gen 9:4 But you shall not eat of flesh with the life in it, or the blood of it.
Gen 9:5 and surely the blood of your lives will I require. At the hand of every animal will I require it, and at the hand of man. At the hand of every man’s brother will I require the life of man.
Gen 9:6 Whoever sheds man’s blood, his blood shall be shed by man; for He made man in the image of God.
The above scripture was not just a requirement for capitol punishment, but an indication of how important blood is. It carries life. It is the blood that carries nourishment to the body and that carries away the bodies impurities. 1Jn 5:8 And there are three that bear witness on the earth: the Spirit, and the water, and the blood; and the three are into the one.
Gen 12:7 And Jehovah appeared to Abram and said, I will give this land to your seed. And he built an altar there to Jehovah who appeared to him.
Gen 13:18 And Abram moved his tent and came and lived in the oaks of Mamre, which is in Hebron. And he built an altar to Jehovah there. en 22:1 And it happened after these things that God tested Abraham, and said to him, Abraham! And he said, Behold me.
Gen 22:2 And He said, Take now your son, your only one, Isaac, whom you love. And go into the land of Moriah, and offer him there for a burnt offering upon one of the mountains which I will name to you.
Gen 22:3 And Abraham rose up early in the morning, and saddled his ass, and took two of his young men with him, and Isaac his son. And he split the wood for the burnt offering, and rose up and went to the place of which God had told him.
Gen 22:6 And Abraham took the wood of the burnt offering and laid it on Isaac his son. And he took the fire in his hand, and a knife. And they both went together.
Gen 22:7 And Isaac spoke to Abraham his father and said, My father. And he said, Here am I, my son. And he said, Behold the fire and the wood. But where is the lamb for a burnt offering?
Gen 22:8 And Abraham said, My son, God will provide Himself a lamb for a burnt offering. So they both went together.
Gen 22:9 And they came to the place which God had told him of. And Abraham built an altar there and laid the wood in order. And he bound his son Isaac and laid him on the altar, on the wood.
Gen 22:10 And Abraham stretched out his hand and took the knife to slay his son.
Gen 22:11 And the Angel of Jehovah called to him from the heavens and said, Abraham! Abraham! And he said, Here am I.
Gen 22:12 And He said, Do not lay your hand on the lad, nor do anything to him. For now I know that you fear God, since you have not withheld your son, your only one, from Me.
Abram’s act was a testimony of his faith and honor to God. He was willing to spill the blood of his son for a sacrifice. God also was willing to do the same for mankind.
Exo 18:12 And Jethro, Moses’ father-in-law, took a burnt offering and sacrifices for God. And Aaron came, and all the elders of Israel, to eat bread with Moses’ father-in-law before God.
Exo 20:22 And Jehovah said to Moses, So you shall say to the sons of Israel, You have seen that I have talked with you from the heavens.
Exo 20:23 You shall not make with Me gods of silver, neither shall you make to you gods of gold.
Now begins a new custom of sacrifices by all the people and especially the priests, to atone for sins against God.
Exo 20:24 You shall make an altar of earth to Me, and shall sacrifice on it your burnt offerings and your peace offerings, your sheep and your oxen. In all places where I record My name I will come to you, and I will bless you.
And Abraham lifted up his eyes, and looked. And, behold, a ram behind him was entangled in a thicket by its horns. And Abraham went and took the ram and offered it up for a burnt offering instead of his son.
Exo 29:11 And you shall kill the bull before Jehovah, by the door of the tabernacle of the congregation.
Exo 29:12 And you shall take some of the blood of the bull, and put it on the horns of the altar with your finger, and pour all the blood beside the bottom of the altar.
Exo 29:13 And you shall take all the fat that covers the inward parts, and the lobe on the liver, and the two kidneys, and the fat on them, and burn them upon the altar.
Exo 29:14 But the flesh of the bull, and its skin, and its dung, you shall burn with fire outside the camp. It is a sin offering.
Exo 29:15 And you shall also take one ram. And Aaron and his sons shall put their hands upon the head of the ram.
Exo 29:16 And you shall kill the ram, and you shall take its blood and sprinkle all round upon the altar.
Exo 29:17 And you shall cut the ram in pieces, and you shall wash its inward parts and its legs, and put them with its pieces and with its head.
Exo 29:18 And you shall burn the whole ram upon the altar. It is a burnt offering to Jehovah. It is a sweet savor, an offering made by fire to Jehovah.
Exo 29:19 And you shall take the other ram. And Aaron and his sons shall put their hands upon the head of the ram.
Exo 29:20 Then you shall kill the ram, and take of its blood, and put it upon the tip of the ear of Aaron, and upon the tip of the right ear of his sons, and upon the thumb of their right hand, and upon the great toe of their right foot, and sprinkle the blood upon the altar all around.
Exo 29:36 And you shall offer every day a bull, a sin offering for atonement. And you shall cleanse the altar when you have made an atonement for it, and you shall anoint it to sanctify it.
Exo 29:41 And you shall offer the other lamb at evening; you shall do to it according to the meal offering of the morning, and according to its drink offering, for a sweet smell, an offering made by fire to Jehovah.
Exo 29:42 This shall be a burnt offering forever throughout your generations, at the door of the tabernacle of the congregation before Jehovah, where I will meet you, to speak there to you.
Exo 29:43 And there I will meet with the sons of Israel, and Israel shall be sanctified by My glory.
Exo 29:44 And I will sanctify the tabernacle of the congregation and the altar. I will also sanctify both Aaron and his sons to minister to Me in the priest’s office.
Exo 29:45 And I will dwell among the sons of Israel, and will be their God.
Lev 1:1 And Jehovah called to Moses and spoke to him out of the tabernacle of the congregation, saying,
Lev 1:2 Speak to the sons of Israel and say to them, If any one of you brings an offering to Jehovah, you shall bring your offering of the cattle, of the herd and of the flock.
Lev 1:3 If his offering is a burnt sacrifice of the herd, let him offer a male without blemish. He shall offer it of his own voluntary will at the door of the tabernacle of the congregation before Jehovah.
Lev 1:10 And if his offering is of the flocks, of the sheep, or of the goats, for a burnt offering, he shall bring a male without blemish.
Lev 4:1 And Jehovah spoke to Moses saying,
Lev 4:2 Speak to the sons of Israel, saying: If a soul shall sin through ignorance against any of the commandments of Jehovah concerning things which ought not to be done, and shall do any one of them,
Lev 4:3 if the priest who is anointed sins, resulting in guilt to the people, then he shall bring for his sin, which he has sinned, a young bull, a son of the herd without blemish, to Jehovah for a sin offering.
Lev 4:24 And he shall lay his hand on the head of the goat and kill it in the place where he kills the burnt offering before Jehovah. It is a sin offering.
Lev 6:24 And Jehovah spoke to Moses saying,
Lev 6:25 Speak to Aaron and to his sons, saying, This is the law of the sin offering. In the place where the burnt offering is killed, the sin offering shall be killed before Jehovah. It is most holy.
Lev 7:36 which Jehovah commanded to be given to them of the sons of Israel, in the day that He anointed them as a statute forever throughout their generations.
Lev 7:37 This is the law of the burnt offering, of the food offering, and of the sin offering, and of the trespass offering, and of the consecrations, and of the sacrifices of the peace offerings
There were many kinds of sacrifices for different purposes, however, the most important sacrifice involved the shedding of blood to atone for sins.
Lev 7:38 which Jehovah commanded Moses in Mount Sinai, in the day that He commanded the sons of Israel to offer their sacrifices to Jehovah, in the wilderness of Sinai.
Lev 9:7 And Moses said to Aaron, Go to the altar, and offer your sin offering and your burnt offerings, and make an atonement for yourself and for the people. And offer the offering of the people, and make an atonement for them, even as Jehovah commanded.
Lev 16:6 And Aaron shall offer his young bull of the sin offering which is for himself, and make an atonement for himself and for his house.
Mat 12:7 But if you had known what this is, “I desire mercy and not sacrifice,” you would not have condemned those who are not guilty.
Rom 12:1 I beseech you therefore, brothers, by the mercies of God to present your bodies a living sacrifice, holy, pleasing to God, which is your reasonable service.
Eph 5:2 And walk in love, as Christ also has loved us, and has given Himself for us as an offering and a sacrifice to God for a sweet smelling savor.
Heb 7:22 by so much was Jesus made a surety of a better covenant.
Heb 7:27 who does not need, as those high priests, to offer up sacrifice daily, first for his own sins and then for the people’s sins. For He did this once for all, when He offered up Himself.
Heb 9:22 And almost all things are by the law purged with blood, and without shedding of blood is no remission.
Heb 9:23 Therefore it was necessary that the patterns of things in the heavens should be purified with these, but the heavenly things themselves were purified with better sacrifices than these.
Heb 9:24 For Christ has not entered into the Holy of Holies made with hands, which are the figures of the true, but into Heaven itself, now to appear in the presence of God for us.
Heb 9:25 Nor yet that He should offer Himself often, even as the high priest enters into the Holy of Holies every year with the blood of others
Heb 9:26 (for then He must have suffered often since the foundation of the world)(would have had to suffer repeatedly since the foundation of the world. ISV), but now once in the end of the world He has appeared to put away sin by the sacrifice of Himself.
Heb 10:12 But this Man, after He had offered one sacrifice for sins forever, sat down on the right of God,