Therefore shall ye keep my commandments, and do them: I am the Lord – Leviticus 22:31
The Lord spoke to Moses, saying, “Speak to Aaron and his sons, and to all the children of Israel, and say to them: “Whatever man of the house of Israel, or of the strangers in Israel, who offers his sacrifice for any of his vows or for any of his freewill offerings, which they offer to the Lord as a burn offering, you shall offer of your own free will a male without blemish from the cattle, from the sheep, or from the goats. Whatever has a defect, you shall not offer it, for it shall not be acceptable on your behalf.” – Leviticus 22:17-20
Leviticus is a book about acceptable worship of a holy God. Its contents were part of the instructions the Lord gave to Moses at Sinai after the construction of the tabernacle. It should be noted that these regulations were not intended to provide a way of salvation. They were given to a people already redeemed by God’s grace and set apart to Him, just as it is today when we accept Jesus as our Savior. It’s not about working our way to salvation because salvation comes only through Jesus (That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shall be saved. For with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation – Romans 10:9-10). Confession testifies of the grace of God in Christ which has been received by faith.
Now, the Lord had given instructions to the people of God of what to offer and what not to offer just as He has given us instructions today. We no longer sacrifice different animals, but our bodies should have became a living sacrifice to God for those whose professing to be Christians (I beseech you therefore brethren, by the mercies of God that ye present your bodies, a living sacrifice, holy, acceptable unto God, which is your reasonable service – Romans 12:1). We can’t offer ourselves as a living sacrifice when we’re living according to our physical desires, our emotional desires. God didn’t want anything with a blemish to be sacrificed, and He doesn’t want sacrificial worship when the body is blemished by sin.
God’s written words gives every believer the instructions that is required of God, to give Him anything other than His instructions is giving Him our second best which will not be qualified because He wants to be first in every area of our life.
Why should we give God anything less than our best, when He has given us His best?