God provided a ram caught by its horns in a bush for the sacrifice. God graciously allowed Abraham to substitute an animal sacrifice instead of Isaac. Later, all of Israel would offer animals to the Lord, understanding that God's grace allowed this substitution (Exodus 29:10; Leviticus 4:15; 16:20–22).
In the New Testament, God substituted his only son for all humanity. This perfect sacrifice was made once and for all people (Isaiah 53:6, 10; John 1:29; 10:1–14; Hebrews 7:27; 1 Peter 3:18).