Proverbs 14:31

He who oppresses a poor man reproaches his maker, but he who has mercy on a needy man honors him.

Proverbs 17:5

He who mocks a poor man reproaches his maker. He who is glad at calamity shall not be unpunished.

Proverbs 22:2

The rich and the poor meet together. LORD is the maker of them all.

Proverbs 19:17

He who has pity upon a poor man lends to LORD, and he will repay him his good deed.

Job 31:13-16

If I have despised the case of my man-servant or of my maid-servant when they contended with me,

Psalm 12:5

Because of the oppression of the poor, because of the sighing of the needy, now I will arise, says LORD. I will set him in the safety he gasps for.

Proverbs 14:21

He who despises his neighbor sins, but he who has pity on the poor, happy is he.

Proverbs 22:16

He who oppresses a poor man to his increase, [and] he who gives to a rich man, [comes] only to want.

Proverbs 22:22-23

Do not rob a poor man, because he is poor, nor oppress an afflicted man in the gate.

Ecclesiastes 5:8

If thou see the oppression of a poor man, and the violent wresting of justice and righteousness in a province, marvel not at the matter. For [a man] higher than the high is observing, and there are higher [men] than they.

Matthew 25:40-46

And having answered, the King will say to them, Truly I say to you, inasmuch as ye did it to one of these my brothers, the least, ye did it to me.

John 12:8

For ye always have the poor with you, but ye do not always have me.

2 Corinthians 8:7-9

But as ye abound in everything, in faith, and word, and knowledge, and all diligence, and in your love to us, be that ye may also abound in this kindness.

1 John 3:17-21

But whoever has the world's living, and sees his brother having need, and closes his bowels from him, how does the love of God abide in him?

1 John 4:21

And we have this commandment from him, so that he who loves God will also love his brother.

Treasury of Scripture Knowledge

Summary

He that oppresseth the poor reproacheth his Maker: but he that honoureth him hath mercy on the poor.

Bible References

That oppresseth

Proverbs 17:5
He who mocks a poor man reproaches his maker. He who is glad at calamity shall not be unpunished.
Proverbs 22:2
The rich and the poor meet together. LORD is the maker of them all.
Job 31:13
If I have despised the case of my man-servant or of my maid-servant when they contended with me,
Psalm 12:5
Because of the oppression of the poor, because of the sighing of the needy, now I will arise, says LORD. I will set him in the safety he gasps for.
Ecclesiastes 5:8
If thou see the oppression of a poor man, and the violent wresting of justice and righteousness in a province, marvel not at the matter. For [a man] higher than the high is observing, and there are higher [men] than they.
Matthew 25:40
And having answered, the King will say to them, Truly I say to you, inasmuch as ye did it to one of these my brothers, the least, ye did it to me.

But

Proverbs 14:21
He who despises his neighbor sins, but he who has pity on the poor, happy is he.
Proverbs 19:17
He who has pity upon a poor man lends to LORD, and he will repay him his good deed.
Matthew 25:40
And having answered, the King will say to them, Truly I say to you, inasmuch as ye did it to one of these my brothers, the least, ye did it to me.
John 12:8
For ye always have the poor with you, but ye do not always have me.
2 Corinthians 8:7
But as ye abound in everything, in faith, and word, and knowledge, and all diligence, and in your love to us, be that ye may also abound in this kindness.
1 John 3:17
But whoever has the world's living, and sees his brother having need, and closes his bowels from him, how does the love of God abide in him?
1 John 4:21
And we have this commandment from him, so that he who loves God will also love his brother.

General references

Leviticus 25:14
And if thou sell anything to thy neighbor, or buy of thy neighbor's hand, ye shall not wrong each other.
Deuteronomy 24:14
Thou shall not oppress a hired servant who is poor and needy, whether he be of thy brothers, or of thy sojourners that are in thy land within thy gates.
Proverbs 3:9
Honor LORD with thy substance, and with the first-fruits of all thine increase,