Sacrifices/offerings were given to maintain a relationship with God.
Sacrifices must cost the sinner.
Sacrifices were both individual and corporate.
Sacrifices must be of their best.
Sacrifices were portraying the innocent dying for the guilty.
Sacrifices were now to be made at a specific place.
Sacrifices were a substitute, to do for a person what they could not do.
Sacrifices were the grace of God for the atonement for sin.
Sacrifices were slain by the sinner.
The currency of God that atones for sin is blood.
Sacrifices became holy when the blood touched the holy altar.
Accepting different sacrifices shows it is about the heart.