Matthew 25:40

And the King will answer them, 'I solemnly say to you, every time you did a good deed to one of these most insignificant brothers of mine, you did a good deed to me.'

Acts 20:35

In everything I showed you that by working hard like this we must help those who are weak, and remember the words of the Lord Jesus, that He said, 'It makes one happier to give than to get.'"

Romans 12:8

or of one who encourages others, in the field of encouragement; or one who gives his money, with liberality; or one who leads others, with earnestness; or one who does deeds of charity, with cheerfulness.

2 Corinthians 9:5-11

So I have thought it necessary to urge these brothers to visit you ahead of me and get your promised love-offering ready beforehand, so as to have it ready as a real love-offering, not as one grasped and grudgingly given.

Philippians 4:18-19

I have received your payment in full, and more too. I am amply supplied after getting the things you sent by Epaphroditus; they are like sweet incense, the kind of sacrifice that God accepts and approves.

1 Timothy 6:18-19

charge them to continue doing good and being rich in good deeds, open-handed and generous hearted,

Hebrews 13:16

And stop neglecting to do good and to be generous, for God is highly pleased with just such sacrifices as these.

1 Peter 4:11

If anyone is preaching, let him do it as one who utters the oracles of God; if anyone is rendering any service to others, let him do it with all the strength that God supplies, so that in everything God may be glorified through Jesus Christ. To Him be glory and dominion forever and ever. Amen.

Treasury of Scripture Knowledge

Summary

Thou shalt surely give him, and thine heart shall not be grieved when thou givest unto him: because that for this thing the LORD thy God shall bless thee in all thy works, and in all that thou puttest thine hand unto.

General references

Bible References

Thine heart

Matthew 25:40
And the King will answer them, 'I solemnly say to you, every time you did a good deed to one of these most insignificant brothers of mine, you did a good deed to me.'
Acts 20:35
In everything I showed you that by working hard like this we must help those who are weak, and remember the words of the Lord Jesus, that He said, 'It makes one happier to give than to get.'"
Romans 12:8
or of one who encourages others, in the field of encouragement; or one who gives his money, with liberality; or one who leads others, with earnestness; or one who does deeds of charity, with cheerfulness.
2 Corinthians 9:5
So I have thought it necessary to urge these brothers to visit you ahead of me and get your promised love-offering ready beforehand, so as to have it ready as a real love-offering, not as one grasped and grudgingly given.
1 Timothy 6:18
charge them to continue doing good and being rich in good deeds, open-handed and generous hearted,
1 Peter 4:11
If anyone is preaching, let him do it as one who utters the oracles of God; if anyone is rendering any service to others, let him do it with all the strength that God supplies, so that in everything God may be glorified through Jesus Christ. To Him be glory and dominion forever and ever. Amen.

Because

2 Corinthians 9:8
And God is able to make your every spiritual blessing overflow for you, so that you will always have in every situation an entire sufficiency and so overflow for every good cause;
Philippians 4:18
I have received your payment in full, and more too. I am amply supplied after getting the things you sent by Epaphroditus; they are like sweet incense, the kind of sacrifice that God accepts and approves.
Hebrews 13:16
And stop neglecting to do good and to be generous, for God is highly pleased with just such sacrifices as these.

General references

Luke 6:34
And if you ever lend to people expecting to get it back, what credit do you get for that? Even notorious sinners practice lending to one another, expecting to get it back in full.