Leviticus 23:14-16

New International Version - UK

¹⁴ You must not eat any bread, or roasted or new grain, until the very day you bring this offering to your God. This is to be a lasting ordinance for the generations to come, wherever you live.

The Festival of Weeks

¹⁵ ‘“From the day after the Sabbath, the day you brought the sheaf of the wave offering, count seven full weeks. ¹⁶ Count fifty days up to the day after the seventh Sabbath, and then present an offering of new grain to the Lord.