Exodus 30:14
Everyone who is numbered, from twenty years old and over, is to give an offering to the Lord.
Numbers 1:3
All those of twenty years old and over, who are able to go to war in Israel, are to be numbered by you and Aaron.
Numbers 1:18
And they got together all the people on the first day of the second month; and everyone made clear his family and his father's house, by the number of the names, from twenty years old and over.
Numbers 1:20
The generations of the sons of Reuben, the oldest son of Israel, were numbered by their families and their fathers' houses, every male of twenty years old and over, who was able to go to war;
Numbers 14:29
Your dead bodies will be stretched out in this waste land; and of all your number, all those of twenty years old and over who have been crying out against me,
Numbers 26:2
Let all the children of Israel be numbered, by the names of their fathers' families, all those of twenty years old and over who are able to go to war in Israel.
Numbers 32:11
Truly, not one of the men of twenty years old and over who came out of Egypt will see the land which I gave by oath to Abraham, Isaac, and Jacob; because they have not been true to me with all their heart;