1 Corinthians 16:2

On the first day of the week let each one of you lay aside by himself in store as God has prospered him, that there may be no collections made when I come.

2 Corinthians 8:10

And in this case I give an opinion; for this is expedient for you, who began before to act in this matter and to act willingly a year ago.

2 Corinthians 8:12

For if there is a willing mind, a man is acceptable according to what he has, and not according to what he has not.

2 Corinthians 9:5-11

I thought it necessary, therefore, to exhort the brothers to go to you before, and to make ready your free gift before announced, that it may be ready as a free gift and not as an exaction.

Treasury of Scripture Knowledge

Summary

And thou shalt keep the feast of weeks unto the LORD thy God with a tribute of a freewill offering of thine hand, which thou shalt give unto the LORD thy God, according as the LORD thy God hath blessed thee:

Bible References

According

1 Corinthians 16:2
On the first day of the week let each one of you lay aside by himself in store as God has prospered him, that there may be no collections made when I come.
2 Corinthians 8:10
And in this case I give an opinion; for this is expedient for you, who began before to act in this matter and to act willingly a year ago.
2 Corinthians 9:5
I thought it necessary, therefore, to exhort the brothers to go to you before, and to make ready your free gift before announced, that it may be ready as a free gift and not as an exaction.