rsv Exodus:13:12-13
rsv@Exodus:13:12 @ you shall set apart to the LORD all that first opens the womb. All the firstlings of your cattle that are males shall be the LORD's.
rsv@Exodus:13:13 @ Every firstling of an ass you shall redeem with a lamb, or if you will not redeem it you shall break its neck. Every first-born of man among your sons you shall redeem.