Exodus 13:12-15

Brenton(i) 12 that thou shalt set apart every offspring opening the womb, the males to the Lord, every one that opens the womb out of the herds or among thy cattle, as many as thou shalt have: thou shalt sanctify the males to the Lord. 13 Every offspring opening the womb of the ass thou shalt change for a sheep; and if thou wilt not change it, thou shalt redeem it: every first-born of man of thy sons shalt thou redeem. 14 And if thy son should ask thee hereafter, saying, What is this? then thou shalt say to him, With a strong hand the Lord brought us out of Egypt, out of the house of bondage. 15 And when Pharao hardened his heart so as not to send us away, he slew every first-born in the land of Egypt, both the first-born of man and the first-born of beast; therefore do I sacrifice every offspring that opens the womb, the males to the Lord, and every first-born of my sons I will redeem.