'Free will' in the Bible

and ye would offer, as an altar-flame unto Yahweh an ascending-offering or a sacrifice, for celebrating a vow or as a freewill-offering, or in your appointed seasons, - by way of offering a satisfying odour unto Yahweh, from the herd or from the flock,

These, shall ye offer unto Yahweh in your appointed seasons, - besides your vow-offerings and your freewill offerings - as your ascending-sacrifices, and as your meal-offerings, and as your drink-offerings and as your peace-offerings.