Bible Verses About Offerings: Free-will

Beside the Sabbaths of the Lord, and beside your giftes, and beside al your vowes, and beside all your free offrings, which ye shall giue vnto the Lord.

And thou shalt keepe the feast of weekes vnto the Lord thy God, euen a free gift of thine hand, which thou shalt giue vnto the Lord thy God, as the Lord thy God hath blessed thee.

That which is gone out of thy lippes, thou shalt keepe and performe, as thou hast vowed it willingly vnto the Lord thy God: for thou hast spoken it with thy mouth.