'Twenty first' in the Bible

In the first month, from the fourteenth day of the month, in the evening, you will eat bread made without yeast until the twenty-first day of the month in the evening.

the twenty-first to Jakin, the twenty-second to Gamul,

the twenty-first to Hothir and his sons and relatives -- twelve in all,

On the twenty-first day of the seventh month, the Lord spoke again through the prophet Haggai: