Observe the month of Abib, and keep the passover to the LORD your God: for in the month of Abib the LORD your God brought you forth out of Egypt by night.
Three times in a year shall all your males appear before the LORD your God in the place which he shall choose; in the feast of unleavened bread, and in the feast of weeks, and in the feast of tabernacles: and they shall not appear before the LORD empty: