'Free will' in the Bible

And all they that were about them, strengthened their hands with vessels of silver and gold, with goods and cattle, and jewels, beside that which they gave of their own free will.

Afterward, the daily burnt offering also, and of the new moons and of all the feast days of the LORD that were hallowed, and all manner of freewill offerings, which they did of their own freewill unto the LORD.