Numbers 31:54

Overview - Numbers 31
The Midianites are spoiled, and Balaam slain.
13 Moses is wroth with the officers, for saving the women alive.
19 How the soldiers, with their captives and spoil, are to be purified.
25 The proportion in which the prey is to be divided.
48 The voluntary oblation unto the treasury of the Lord.
Treasury of Scripture Knowledge

Numbers 31:54  (King James Version)
And Moses and Eleazar the priest took the gold of the captains of thousands and of hundreds, and brought it into the tabernacle of the congregation, for a memorial for the children of Israel before the LORD.

a memorial
16:40 Exodus 30:16 ; Joshua 4:7 ; Psalms 18:49 ; Psalms 103:1 Psalms 103:2 115:1 145:7 Zechariah 6:14
Luke 22:19 ; Acts 10:4