Exodus 23:14-17

Brenton(i) 14 Keep ye a feast to me three times in the year. 15 Take heed to keep the feast of unleavened bread: seven days ye shall eat unleavened bread, as I charged thee at the season of the month of new corn, for in it thou camest out of Egypt: thou shalt not appear before me empty. 16 And thou shalt keep the feast of the harvest of first-fruits of thy labours, whatsoever thou shalt have sown in thy field, and the feast of completion at the end of the year in the gathering in of thy fruits out of thy field. 17 Three times in the year shall all thy males appear before the Lord thy God.
Reformed Dating