'Willingly' in the Bible

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

And some of the heads of the fathers in their coming in to the house of Jehovah that is in Jerusalem, have offered willingly for the house of God, to establish it on its base;

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 freewill offering unto the LORD.

You are also to bring the silver and gold the king and his counselors have willingly given to the God of Israel, whose dwelling is in Jerusalem,

And all the silver and gold that thou canst 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: