'Free will' in the Bible

Kore the son of Imnah the Levite, the keeper of the eastern gate, was over the freewill offerings of God, to apportion the contributions for the Lord and the most holy things.

His officers also contributed a freewill offering to the people, the priests and the Levites. Hilkiah and Zechariah and Jehiel, the officials of the house of God, gave to the priests for the Passover offerings 2,600 from the flocks and 300 bulls.