'Free will' in the Bible

and will make an offering by fire to LORD, a burnt-offering, or a sacrifice, to accomplish a vow, or as a freewill-offering, or in your set feasts, to make a sweet savor to LORD, of the herd, or of the flock,

These ye shall offer to LORD in your set feasts, besides your vows, and your freewill-offerings, for your burnt-offerings, and for your meal-offerings, and for your drink-offerings, and for your peace-offerings.