2 Chronicles 17:16

After him Amasiah, the son of Zichri, who freely gave himself to the Lord, and with him two hundred thousand men of war;

Judges 5:9

Come, you rulers of Israel, you who gave yourselves freely among the people: give praise to the Lord.

Judges 5:2

Because of the flowing hair of the fighters in Israel, because the people gave themselves freely, give praise to the Lord.

1 Chronicles 29:9

Then the people were glad because their offerings were freely given, for with a true heart they freely gave what they had to the Lord; and David the king was full of joy.

1 Chronicles 29:14

But who am I and what is my people, that we have power to give so freely in this way? for all things come from you, and what we have given you is yours.

1 Chronicles 29:17

And I am conscious, my God, that you are the searcher of hearts, taking pleasure in righteousness. As for me, with an upright heart I have freely given all these things; and I have seen with joy your people who are here to make their offerings freely to you.

2 Corinthians 8:3-5

For I give them witness, that as they were able, and even more than they were able, they gave from the impulse of their hearts,

2 Corinthians 8:12

For if there is a ready mind, a man will have God's approval in the measure of what he has, and not of what he has not.

Treasury of Scripture Knowledge

Summary

And next him was Amasiah the son of Zichri, who willingly offered himself unto the LORD; and with him two hundred thousand mighty men of valour.

General references

Bible References

Willingly

Judges 5:2
Because of the flowing hair of the fighters in Israel, because the people gave themselves freely, give praise to the Lord.
1 Chronicles 29:9
Then the people were glad because their offerings were freely given, for with a true heart they freely gave what they had to the Lord; and David the king was full of joy.
2 Corinthians 8:3
For I give them witness, that as they were able, and even more than they were able, they gave from the impulse of their hearts,

General references

Genesis 13:16
And I will make your children like the dust of the earth, so that if the dust of the earth may be numbered, then will your children be numbered.
Numbers 1:26
The generations of the sons of Judah were numbered by their families and their fathers' houses, every male of twenty years old and over who was able to go to war;

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain