'Free will offering' in the Bible

And if the sacrifice of his offering is a vow or free-will offering, in the day of his bringing near his sacrifice it is eaten; and on the morrow also the remnant of it is eaten;

then ye have prepared a fire-offering to Jehovah, a burnt-offering, or a sacrifice, at separating a vow or free-will-offering, or in your appointed things, to make a sweet fragrance to Jehovah, out of the herd, or out of the flock.

and thou hast made the feast of weeks to Jehovah thy God, a tribute of a free-will offering of thy hand, which thou dost give, as Jehovah thy God doth bless thee.

The produce of thy lips thou dost keep, and hast done it, as thou hast vowed to Jehovah thy God; a free-will-offering, which thou hast spoken with thy mouth.

And every one who is left, of any of the places where he is a sojourner, assist him do the men of his place with silver, and with gold, and with goods, and with beasts, along with a free-will offering for the house of God, that is in Jerusalem.'

With a free will-offering I sacrifice to Thee, I thank Thy name, O Jehovah, for it is good,