Deuteronomy 15:18-20

King James Version

¹⁸ It shall not seem hard unto thee, when thou sendest him away free from thee; for he hath been worth a double hired servant to thee, in serving thee six years: and the Lord thy God shall bless thee in all that thou doest.

¹⁹ All the firstling males that come of thy herd and of thy flock thou shalt sanctify unto the Lord thy God: thou shalt do no work with the firstling of thy bullock, nor shear the firstling of thy sheep.

²⁰ Thou shalt eat it before the Lord thy God year by year in the place which the Lord shall choose, thou and thy household.