"to redeem". Some translations use "ransom". This refers back to the Exodus from Egypt in Exodus 12 and 13. Also, see how the Apostle Paul uses these phrases to refer to Jesus Christ as the Passover Lamb and Redeemer. (1 Corinthians 5:7, Galatians 3:13, 1Timothy 2:6, Titus 2:14 and 1 Peter 1:19).