Exodus 34:23 in the King James Version
Thrice in the year shall all your men children appear before the Lord GOD, the God of Israel.
Context
22 “You shall observe the feast of weeks with the first fruits of wheat harvest, and the feast of harvest at the year’s end.
23 Three times in the year all your males shall appear before the Lord GOD, the God of Israel.
24 For I will drive out nations before you and enlarge your borders; neither shall any man desire your land when you go up to appear before the LORD, your God, three times in the year.