Book of Joel Chapter 3 Vs. 5

 The Lord Judges the Nations

Because ye have taken my silver and my gold, and have carried into your temples my goodly pleasant things: Joel 3:5

Because ye have... Which is all of the Lord's (Hag. 2:8); or which he had bestowed upon his people, and they had taken from them.

and have carried... Either the rich furniture of the houses of his people, which they carried into their own houses, or "palaces", as it may be rendered. Having either taken them away themselves, or bought them of others that had taken them.

Or else the rich vessels of the temple; as these were carried away by the Chaldeans, and put into their idol temples (Dan. 1:2); so afterward they were taken by the Romans, and put into the temples of their gods.

Whether any of these came into the hands of the Tyrians, etc. by any means, and were put into their idol temples, as the temple of Hercules, is not certain; however, it is notorious that the Roman Catholics and the Tyrians are an emblem of, not only build stately temples, and dedicate them to angels and saints, but most profusely adorn them with gold and silver.

my goodly pleasant... And all goodly and desirable things; which is putting them to an idolatrous use they were not designed for.

They had taken the silver and gold in the temple, and also, robbed the people of their silver and gold. They worshipped false gods, and used God's precious metals in that false worship.

These are specified as robbery (Joel 3:5) and slave trade (Joel 3:6). Since neither the Phoenicians nor the Philistines are mentioned as robbing the temple treasuries during the destruction of Jerusalem (cf. 2Kgs. 25:1-30), Joel 3:5 may refer to Israel’s wealth in general, not to the temple (cf. Wolff, Joel and Amos, p. 78).