Cross reference
Mark 8:37
37 And what would a man give in exchange for his life?
Psalms 49:7-8
7 Truly, no man may get back his soul for a price, or give to God the payment for himself;
8 (Because it takes a great price to keep his soul from death, and man is not able to give it.)
1 Peter 1:18-19
18 Being conscious that you have been made free from that foolish way of life which was your heritage from your fathers, not through a payment of things like silver or gold which come to destruction,
19 But through holy blood, like that of a clean and unmarked lamb, even the blood of Christ: