'Freewill Offerings' in the Bible

Speak unto Aaron, and unto his sons, and unto all the sons of Israel, and thou shalt say unto them - What man, soever, of the house of Israel, or of the sojourners in Israel, may bring near his oblation, as regardeth any of their vows, or any of their freewill offerings which they may bring near unto Yahweh, as an ascending-sacrifice,

besides the sabbaths of Yahweh, and besides your presents, and besides all your vows, and besides all your freewill offerings which ye shall give unto Yahweh.

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.

And, Kore, son of Imnah the Levite, the door-keeper on the east, was over the freewill offerings of God, - to give the heave-offering of Yahweh, and the most holy things.

The freewill offerings of my mouth, accept, I pray thee, O Yahweh, And, thy regulations, teach thou me.