'Willingly' in the Bible

And all they that were round about them strengthened their hands with vessels of silver, with gold, with goods, and with beasts, and with precious things, besides all that was willingly offered.

And some of the heads of fathers houses , when they came to the house of Jehovah which is in Jerusalem, offered willingly for the house of God to set it up in its place:

and afterward the continual burnt-offering, and the offerings of the new moons, and of all the set feasts of Jehovah that were consecrated, and of every one that willingly offered a freewill-offering unto Jehovah.

and all the silver and gold that thou shalt find in all the province of Babylon, with the freewill-offering of the people, and of the priests, offering willingly for the house of their God which is in Jerusalem;