Know ye not that we shall judge angels? how much more things that pertain to this life?

People's New Testament

6:3 Know ye not that we shall judge angels? Evidently the bad angels, who shall be judged when the world is judged.

Scofield Reference Notes

Margin angels

See Scofield Note: "Heb 1:4".

Jamieson-Fausset-Brown Bible Commentary

3. judge angels-namely, bad angels. We who are now "a spectacle to angels" shall then "judge angels." The saints shall join in approving the final sentence of the Judge on them (Jude 6). Believers shall, as administrators of the kingdom under Jesus, put down all rule that is hostile to God. Perhaps, too, good angels shall then receive from the Judge, with the approval of the saints, higher honors.

Matthew Henry's Concise Commentary

6:1-8 Christians should not contend with one another, for they are brethren. This, if duly attended to, would prevent many law-suits, and end many quarrels and disputes. In matters of great damage to ourselves or families, we may use lawful means to right ourselves, but Christians should be of a forgiving temper. Refer the matters in dispute, rather than go to law about them. They are trifles, and may easily be settled, if you first conquer your own spirits. Bear and forbear, and the men of least skill among you may end your quarrels. It is a shame that little quarrels should grow to such a head among Christians, that they cannot be determined by the brethren. The peace of a man's own mind, and the calm of his neighbourhood, are worth more than victory. Lawsuits could not take place among brethren, unless there were faults among them.