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

Exodus 23:17
Three times a year all your males are to appear before the Lord GOD.

Deuteronomy 16:16
Three times a year all your men are to appear before the LORD your God in the place He will choose: at the Feast of Unleavened Bread, the Feast of Weeks, and the Feast of Tabernacles No one should appear before the LORD empty-handed.

1 Samuel 1:3
Year after year Elkanah would go up from his city to worship and sacrifice to the LORD of Hosts at Shiloh, where Eli's two sons, Hophni and Phinehas, were priests to the LORD.

2 Chronicles 8:13
He observed the daily requirement for offerings according to the commandment of Moses for Sabbaths, New Moons, and the three annual appointed feasts--the Feast of Unleavened Bread, the Feast of Weeks, and the Feast of Tabernacles.

Psalm 84:7
They go from strength to strength, until each appears before God in Zion.

Ezekiel 46:9
When the people of the land come before the LORD at the appointed feasts, whoever enters by the north gate to worship must go out by the south gate, and whoever enters by the south gate must go out by the north gate. No one is to return through the gate by which he entered, but each must go out by the opposite gate.