Leviticus 1:4

put his hand upon

The laying of the offerer's hand signified acceptance and identification if himself with his offering. In type it answered to the believer's faith accepting and identifying himself with Christ (Romans 4:5); (Romans 6:3). The believer is justified by faith, and his faith is reckoned for righteousness, because his faith identifies him with Christ, who died as his sin-offering; (2 Corinthians 5:21); (1 Peter 2:24).

atonement

( See Scofield) - (Exodus 29:33).