Exodus 13:10-12

Amplified Bible

¹⁰ Therefore, you shall keep this ordinance at this time from year to year.

¹¹ “Now it shall be when the Lord brings you into the land of the Canaanite, as He swore to you and your fathers, and gives it to you, ¹² you shall set apart and dedicate to the Lord all that first opens the womb. All the firstborn males of your livestock shall be the Lord’s.