Bezalel and his craftsmen made the articles of the beautiful tabernacle, but where did he get the material, since they had been slaves? Notice something about the bronze laver,

He made the laver of bronze and its base of bronze, from the bronze mirrors of the serving women who assembled at the door of the tabernacle of meeting (Exodus 38.8).

We know from earlier in the narration, that they got their metals from the Egyptians, by asking for those things from the Egyptians just before Israel left Egypt.

What was once used to see one’s self, then became an item for cleansing as the priests approached God for the people.