'Voluntary offerings' in the Bible

Anyone who survives in any of those places where he is a resident foreigner must be helped by his neighbors with silver, gold, equipment, and animals, along with voluntary offerings for the temple of God which is in Jerusalem.'"

All their neighbors assisted them with silver utensils, gold, equipment, animals, and expensive gifts, not to mention all the voluntary offerings.

When they came to the Lord's temple in Jerusalem, some of the family leaders offered voluntary offerings for the temple of God in order to rebuild it on its site.

After that, they offered all of the continual burnt offerings and the New Moon sacrifices for all of the designated festivals of the LORD that were being consecrated, along with all the voluntary offerings that were dedicated to the LORD.