This was because the people of Ammon and Moab did not give food and water to the Israelites on their way out of Egypt. Instead, they paid money to Balaam to curse Israel, but our God turned the curse into a blessing.
Here is a list of the amounts of the metals used in the Tent of the Lord's presence, where the two stone tablets were kept on which the Ten Commandments were written. The list was ordered by Moses and made by the Levites who worked under the direction of Ithamar son of Aaron the priest.
May the Lord remove from the community of Israel those who did this, and never again let them participate in the offerings our nation brings to the Lord Almighty.
Israel, how happy you are! There is no one like you, a nation saved by the Lord. The Lord himself is your shield and your sword, to defend you and give you victory. Your enemies will come begging for mercy, and you will trample them down.