'Feast of Weeks' in the Bible

And thou shall observe the feast of weeks, [even] of the first-fruits of wheat harvest, and the feast of ingathering at the year's end.

And thou shall keep the feast of weeks to LORD thy God with a tribute of a freewill-offering from thy hand, which thou shall give, according as LORD thy God blesses thee.

Three times in a year all thy males shall appear before LORD thy 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