'Twenty first' in the Bible

In the first month, on the fourteenth day of the month at evening, you shall eat unleavened bread, until the twenty-first day of the month at evening.

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

the twenty-first was to Hothir, his sons and his brothers, twelve;

In the seventh month, in the twenty-first of the month, the Word of Jehovah came by the prophet Haggai, saying,