'Free will' in the Bible

Speak to Aaron, and to his sons, and to all the children of Israel, and say to them, Whoever he may be of the house of Israel, or of the strangers in Israel, that will offer his oblation for all his vows, and for all his free-will-offerings, which they will offer to the LORD for a burnt-offering:

And whoever offereth a sacrifice of peace-offerings to the LORD to accomplish his vow, or a free-will-offering in beeves, or sheep, it shall be perfect to be accepted: there shall be in it no blemish.

Either a bullock, or a lamb that hath any thing superfluous or lacking in his parts, that mayest thou offer for a free-will-offering; but for a vow it shall not be accepted.

Beside the sabbaths of the LORD, and beside your gifts, and beside all your vows, and beside all your free-will-offerings, which ye give to the LORD.

And will make an offering by fire to the LORD, a burnt-offering, or a sacrifice in performing a vow, or in a free-will-offering, or in your solemn feasts, to make a sweet savor to the LORD, of the herd, or of the flock:

These things ye shall do to the LORD in your set feasts, besides your vows, and your free-will-offerings, for your burnt-offerings, and for your meat-offerings, and for your drink-offerings, and for your peace-offerings.

And thither ye shall bring your burnt-offerings, and your sacrifices, and your tithes, and heave-offerings of your hand, and your vows, and your free-will-offerings, and the firstlings of your herds, and of your flocks:

Thou mayest not eat within thy gates the tithe of thy corn, or of thy wine, or of thy oil, or the firstlings of thy herds or of thy flock, nor any of thy vows which thou vowest, nor thy free-will-offerings, or heave-offering of thy hand:

And thou shalt keep the feast of weeks to the LORD thy God with a tribute of a free-will-offering of thy hand, which thou shalt give to the LORD thy God, according as the LORD thy God hath blessed thee:

That which is uttered by thy lips thou shalt keep and perform; even a free-will-offering, according as thou hast vowed to the LORD thy God, which thou hast promised with thy mouth.

And Kore the son of Imnah the Levite, the porter towards the east, was over the free-will-offerings of God, to distribute the oblations of the LORD, and the most holy things.

And whoever remaineth in any place where he sojourneth, let the men of his place help him with silver, and with gold, and with goods, and with beasts, besides the free-will-offering for the house of God that is in Jerusalem.

And afterward offered the continual burnt-offering, both of the new moons, and of all the set feasts of the LORD that were consecrated, and of every one that willingly offered a free-will-offering to the LORD.

I make a decree, that all they of the people of Israel, and of his priests and Levites, in my realm, who are disposed of their own free will to go to Jerusalem, go with thee.

And all the silver and gold that thou canst find in all the province of Babylon, with the free-will-offering of the people, and of the priests, offering willingly for the house of their God which is in Jerusalem:

And I said to them, Ye are holy to the LORD; the vessels are holy also; and the silver and the gold are a free-will-offering to the LORD God of your fathers.

Accept, I beseech thee, the free-will-offerings of my mouth, O LORD, and teach me thy judgments.