Numbers 4:23
“From thirty years old and upward until fifty years old shalt thou number them; all that enter in to perform the service, to do the work in the tabernacle of the congregation.”
And the Lord spake unto Moses, saying,
Take also the sum of the sons of Gershon, throughout the houses of their fathers, by their families;
From thirty years old and upward until fifty years old shalt thou number them; all that enter in to perform the service, to do the work in the tabernacle of the congregation.
This is the service of the families of the Gershonites, to serve, and for burdens:
And they shall bear the curtains of the tabernacle, and the tabernacle of the congregation, his covering, and the covering of the badgers’ skins that is above upon it, and the hanging for the door of the tabernacle of the congregation,
Why This Verse Was Tagged
This verse contains specific terms directly associated with this theme.
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Cross-References
“For by the last words of David the Levites were numbered from twenty years old and above:”
“This charge I commit unto thee, son Timothy, according to the prophecies which went before on thee, that thou by them mightest war a good warfare;”
“Who is this that cometh from Edom, with dyed garments from Bozrah? this that is glorious in his apparel, travelling in the greatness of his strength? I that speak in righteousness, mighty to save.”
“Finally, my brethren, be strong in the Lord, and in the power of his might.”
“By the word of truth, by the power of God, by the armour of righteousness on the right hand and on the left,”