Isaiah 1:17

learn to do well: seek judgment, gladden the oppressed, do justice to the fatherless, plead for the widow.

Jeremiah 22:3

Thus saith Jehovah: Execute judgment and righteousness, and deliver the spoiled out of the hand of the oppressor; and do no wrong, do no violence to the stranger, the fatherless, or the widow, and shed not innocent blood in this place.

Zephaniah 2:3

Seek Jehovah, all ye meek of the land, who have performed his ordinance; seek righteousness, seek meekness: it may be ye shall be hid in the day of Jehovah's anger.

Isaiah 1:23

thy princes are rebellious, and companions of thieves; every one loveth presents, and hunteth after rewards; they judge not the fatherless, and the cause of the widow cometh not unto them.

Psalm 82:3-4

Judge the poor and the fatherless, do justice to the afflicted and the destitute;

Proverbs 31:9

Open thy mouth, judge righteously, and minister justice to the afflicted and needy.

Jeremiah 22:15-16

Shalt thou reign, because thou viest with the cedar? Did not thy father eat and drink, and do judgment and justice? Then it was well with him.

Daniel 4:27

Therefore, O king, let my counsel be acceptable unto thee, and break off thy sins by righteousness, and thine iniquities by shewing mercy to the poor; if it may be a lengthening of thy tranquillity.

Micah 6:8

He hath shewn thee, O man, what is good: and what doth Jehovah require of thee, but to do justly, and to love goodness, and to walk humbly with thy God?

Zechariah 7:9-10

Thus speaketh Jehovah of hosts, saying, Execute true judgment, and shew loving-kindness and mercies one to another,

Zechariah 8:16

These are the things that ye shall do: Speak truth every one with his neighbour; execute truth and the judgment of peace in your gates;

Treasury of Scripture Knowledge

Summary

Learn to do well; seek judgment, relieve the oppressed, judge the fatherless, plead for the widow.

Bible References

General references

Exodus 22:22
Ye shall not afflict any widow or fatherless child.
Leviticus 25:14
And if ye sell ought unto your neighbour, or buy of your neighbour's hand, ye shall not overreach one another.
Leviticus 26:23
And if ye will not be disciplined by me through these, but walk contrary unto me,
Deuteronomy 25:1
If there be a controversy between men, and they resort to judgment, and they judge their case; then they shall justify the righteous, and condemn the wicked.
Job 9:30
If I washed myself with snow-water, and cleansed my hands in purity,
Proverbs 31:9
Open thy mouth, judge righteously, and minister justice to the afflicted and needy.