Exodus 30:14
All passing by upon their reviewing, from the son of twenty years and above, shall give an offering to Jehovah.
Numbers 1:3
From the son of twenty years and above, all going forth to war in Israel; ye shall review them according to their armies, thou and Aaron.
Numbers 1:18
And they gathered together all the assembly in one of the second month, and they will declare their birth according to their families, according to the the son of twenty years and above, all going forth to war
Numbers 1:20
And the sons of Reuben, the firstborn of Israel, shall be their generations, according to their families, according to the house of their fathers, according to the number of names, according to their heads, every male from the son of twenty years and above, all going forth to war.
Numbers 14:29
In this desert shall your carcasses fall; and all of you being reviewed according to all your number, from the son of twenty years and above, who murmured against me.
Numbers 26:2
Take the head of all the assembly of the sons of Israel, from the son of twenty years and above, according to the house of their fathers, all going forth to war in Israel.
Numbers 32:11
If the men coming up out of Egypt, from the son of twenty years and above, shall see the land which I sware to Abraham, to Isaak and to Jacob; for they filled not up after me: