'Willingly' in the Bible

gold for the things of gold, silver for the things of silver, that is, for all the work to be done by craftsmen. Now who is willing to consecrate himself today to the Lord?”

Then the rulers of the fathers’ households, and leaders of the tribes of Israel, and the commanders of thousands and of hundreds, with the overseers of the king’s work, offered willingly

Then the people rejoiced because they had given willingly, for with a whole and blameless heart they had offered freely to the Lord. King David also rejoiced greatly.

“But who am I, and who are my people, that we should be able to offer as generously as this? For all things come from You, and from Your own hand we have given to You.