'Twenty' in the Bible

Now this is the [measurement of the] foundation which Solomon laid for the house of God: the length in cubits—by the old standard of measure—was sixty cubits (90 ft.), and the width was twenty cubits (30 ft.).

The porch in front of the house was as long as the width of the house, twenty cubits, and the height was 120 cubits. He overlaid it inside with pure gold.

Now he made the room of the Holy of Holies: its length equaling the width of the house was twenty cubits, and its width was twenty cubits; and he overlaid it with 600 talents of fine gold.

The wingspan of the cherubim was twenty cubits: one wing of one cherub was five cubits, reaching to the wall of the house, and its other wing, of five cubits, touched the other cherub’s wing.

The wings of these cherubim extended twenty cubits. The cherubim stood on their feet, their faces toward the Holy Place (the main room).

Then Solomon made an altar of bronze, twenty cubits in length, twenty cubits in width, and ten cubits in height.

Now it came about at the end of the twenty years, in which Solomon had built the house of the Lord and his own house (palace),

Amaziah assembled [the men of] Judah and appointed them in accordance with their fathers’ (ancestors’) households under commanders of thousands and of hundreds throughout Judah and Benjamin. He numbered them from twenty years old and above and found there to be 300,000 choice men fit for war and able to handle spear and shield.

Ahaz was twenty years old when he became king, and he reigned for sixteen years in Jerusalem. He did not do right in the sight of the Lord, as his father (forefather) David had done.

as well as the priests who were registered genealogically according to their fathers’ households, and the Levites from twenty years old and upward, by their duties and by their divisions.