New American Standard Bible (NASB)
Numbers 3
47 you shall take five shekels apiece, per head; you shall take them in terms of the shekel of the sanctuary (the shekel is twenty gerahs),
48 and give the money, the ransom of those who are in excess among them, to Aaron and to his sons."
49 So Moses took the ransom money from those who were in excess, beyond those ransomed by the Levites;
50 from the firstborn of the sons of Israel he took the money in terms of the shekel of the sanctuary, 1,365.
51 Then Moses gave the ransom money to Aaron and to his sons, at the command of the Lord, just as the Lord had commanded Moses.
Numbers 4
1 Then the Lord spoke to Moses and to Aaron, saying,
2 "Take a census of the descendants of Kohath from among the sons of Levi, by their families, by their fathers’ households,
3 from thirty years and upward, even to fifty years old, all who enter the service to do the work in the tent of meeting.
4 This is the work of the descendants of Kohath in the tent of meeting, concerning the most holy things.
5 "When the camp sets out, Aaron and his sons shall go in and they shall take down the veil of the screen and cover the ark of the testimony with it;
6 and they shall lay a covering of porpoise skin on it, and shall spread over it a cloth of pure blue, and shall insert its poles.