Exodus 23:14 in the King James Version
Three times thou shalt keep a feast unto me in the year.
Context
13 “Be careful to do all things that I have said to you; and don’t invoke the name of other gods or even let them be heard out of your mouth.
14 “You shall observe a feast to me three times a year.
15 You shall observe the feast of unleavened bread. Seven days you shall eat unleavened bread, as I commanded you, at the time appointed in the month Abib (for in it you came out of Egypt), and no one shall appear before me empty.