'Free will offering' in the Bible

In the case of , every male and woman whose heart, made them willing, to bring in for any construction which, Yahweh had commanded them to make, by the hand of Moses, in their case did the sons of Israel bring in a free-will offering unto Yahweh.

Whether an ox or a lamb long or short limb, as a free-will offering, thou mayest offer it, but, for a vow, it shall not he accepted.

That which goeth forth out of thy lips, thou must observe and do, - according as thou didst vow unto Yahweh thy God the free-will, offering of which thou didst speak with thy mouth.

And when the prince would offer as a free- will offering, an ascending-sacrifice or peace-offerings as a free-will offering to Yahweh, then shall be opened to him the gate that looketh to the east, and he shall offer his ascending-sacrifice and his peace-offerings just a. he would offer on the sabbath day,- and when he shall go forth, then shall one shut the gate after he hath gone forth.