Matthew 12:34

Ye broods of vipers, how can ye speak good things, yourselves being wicked? for out of the abundance of the heart the mouth speaketh.

2 Corinthians 8:12

For if there is first a ready mind, a man is acceptable according to what he hath, and not according to what he hath not.

2 Corinthians 9:7

Let every man, as he hath purposed in heart, give, not with reluctance or of necessity; for God loveth a cheerful giver.

Treasury of Scripture Knowledge

Summary

And they came, every one whose heart stirred him up, and every one whom his spirit made willing, and they brought the LORD'S offering to the work of the tabernacle of the congregation, and for all his service, and for the holy garments.

Bible References

General references

Matthew 12:34
Ye broods of vipers, how can ye speak good things, yourselves being wicked? for out of the abundance of the heart the mouth speaketh.
2 Corinthians 8:12
For if there is first a ready mind, a man is acceptable according to what he hath, and not according to what he hath not.
2 Corinthians 9:7
Let every man, as he hath purposed in heart, give, not with reluctance or of necessity; for God loveth a cheerful giver.