Exodus 25:2

2 aSpeak to the people of Israel, that they take for me a contribution. From bevery man whose heart moves him you shall receive the contribution for me.

Exodus 29:24

24You shall put all these on the palms of Aaron and on the palms of his sons, and cwave them for a wave offering before the Lord.

Exodus 35:22

22So they came, both men and women. All who were of a willing heart brought brooches and earrings and signet rings and armlets, all sorts of gold objects, every man dedicating an offering of gold to the Lord.
Copyright information for ESV