Exodus 23:14 "Three times a year you shall celebrate a feast to Me.

Exodus 29:38 "Now this is what you shall offer on the altar: two one year old lambs each day, continuously.

Exodus 34:22 "You shall celebrate the Feast of Weeks, that is, the first fruits of the wheat harvest, and the Feast of Ingathering at the turn of the year.

Exodus 34:23 "Three times a year all your males are to appear before the Lord GOD, the God of Israel.

Numbers 28:3 "You shall say to them, 'This is the offering by fire which you shall offer to the LORD: two male lambs one year old without defect as a continual burnt offering every day.

Numbers 28:9 Then on the sabbath day two male lambs one year old without defect, and two-tenths of an ephah of fine flour mixed with oil as a grain offering, and its drink offering:

Numbers 28:10 This is the burnt offering of every sabbath in addition to the continual burnt offering and its drink offering.

Numbers 28:11 'Then at the beginning of each of your months you shall present a burnt offering to the LORD: two bulls and one ram, seven male lambs one year old without defect;

Deuteronomy 16:16 "Three times in a year all your males shall appear before the LORD your God in the place which He chooses, at the Feast of Unleavened Bread and at the Feast of Weeks and at the Feast of Booths, and they shall not appear before the LORD empty-handed. (NASB ©1995)