Proverbs 14:31

He that oppresses the poor reproaches his Maker, but he that has mercy on the poor, honours him.

Proverbs 17:5

Whosoever mocks the poor reproaches his Maker, and he that is glad regarding the calamity of someone else shall not go unpunished.

Proverbs 22:2

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

Proverbs 19:17

He that gives unto the poor lends unto the LORD, and he will give him his reward.

Job 31:13-16

If I had despised the right of my manslave or of my maidslave, when they contended with me;

Psalm 12:5

For the oppression of the poor, for the sighing of the needy, now I will arise, saith the LORD; I will set in safety the one whom the wicked one has ensnared.

Proverbs 14:21

The sinner despises his neighbour, but he that has mercy on the poor is blessed.

Proverbs 22:16

He that oppresses the poor to increase his riches and who gives to the rich shall surely come to want.

Proverbs 22:22-23

Rob not the poor, because he is poor: neither destroy the destitute in judgment:

Ecclesiastes 5:8

If thou seest violence unto the poor and the extortion of rights and justice in a province, do not marvel at the matter, for height is looking upon height; and there is one higher than they.

Matthew 25:40-46

And the King shall answer and say unto them, Verily I say unto you, Inasmuch as ye have done it unto one of the least of these my brothers, ye have done it unto me.

John 12:8

for the poor ye always have with you, but ye shall not always have me.

2 Corinthians 8:7-9

Therefore, as ye abound in every thing, in faith and in word and in knowledge and in all diligence and in your love to us, see that ye abound in this grace also.

1 John 3:17-21

But whosoever has this world's goods and sees his brother have need and shuts up his bowels of compassion from him, how does the charity of God abide in him?

1 John 4:21

And we have this commandment from him, That he who loves God loves his brother also.

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
Whosoever mocks the poor reproaches his Maker, and he that is glad regarding the calamity of someone else shall not go unpunished.
Proverbs 22:2
The rich and poor meet together; the LORD is the maker of them all.
Job 31:13
If I had despised the right of my manslave or of my maidslave, when they contended with me;
Psalm 12:5
For the oppression of the poor, for the sighing of the needy, now I will arise, saith the LORD; I will set in safety the one whom the wicked one has ensnared.
Ecclesiastes 5:8
If thou seest violence unto the poor and the extortion of rights and justice in a province, do not marvel at the matter, for height is looking upon height; and there is one higher than they.
Matthew 25:40
And the King shall answer and say unto them, Verily I say unto you, Inasmuch as ye have done it unto one of the least of these my brothers, ye have done it unto me.

But

Proverbs 14:21
The sinner despises his neighbour, but he that has mercy on the poor is blessed.
Proverbs 19:17
He that gives unto the poor lends unto the LORD, and he will give him his reward.
Matthew 25:40
And the King shall answer and say unto them, Verily I say unto you, Inasmuch as ye have done it unto one of the least of these my brothers, ye have done it unto me.
John 12:8
for the poor ye always have with you, but ye shall not always have me.
2 Corinthians 8:7
Therefore, as ye abound in every thing, in faith and in word and in knowledge and in all diligence and in your love to us, see that ye abound in this grace also.
1 John 3:17
But whosoever has this world's goods and sees his brother have need and shuts up his bowels of compassion from him, how does the charity of God abide in him?
1 John 4:21
And we have this commandment from him, That he who loves God loves his brother also.

General references

Leviticus 25:14
And if thou sell anything unto thy neighbour or buy anything of thy neighbour's hand, ye shall not oppress one another.
Deuteronomy 24:14
Thou shalt not do violence unto a hired servant that is poor and needy, whether he is of thy brethren or of thy strangers that are in thy land within thy gates.
Proverbs 3:9
Honour the LORD with thy substance and with the firstfruits of all thine increase: