'Voluntary offerings' in the Bible

Kore son of Imnah, a Levite and the guard on the east side, was in charge of the voluntary offerings made to God and disbursed the contributions made to the Lord and the consecrated items.

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.

Burn a thank offering of bread made with yeast! Make a public display of your voluntary offerings! For you love to do this, you Israelites." The sovereign Lord is speaking!