Matthew 12:36-37

And I say unto you, that every idle word whatsoever men shall speak, they shall give an account concerning the same in the day of judgment.

Luke 10:29

But he, wishing to justify himself, said to Jesus, And who is my neighbor?

Luke 16:15

And He said to them, Ye are those who justify yourselves before the people; but God knows your hearts: because that which is exalted among the people is abomination in the sight of God.

Philippians 3:12-15

Not that I already received it, or have already been made perfect: but I persevere, if I may receive that for which I have indeed been received by Christ Jesus.

1 Timothy 6:5

wranglings of men having been corrupted as to their mind and turned away from the truth, considering that gain is godliness.

James 3:2

For we all fail in many things; if any one fails not in word, the same is a perfect man, able even to bridle the whole body.

Treasury of Scripture Knowledge

Summary

If I justify myself, mine own mouth shall condemn me: if I say, I am perfect, it shall also prove me perverse.

I am perfect

It shall

Bible References

Justify

Luke 10:29
But he, wishing to justify himself, said to Jesus, And who is my neighbor?
Luke 16:15
And He said to them, Ye are those who justify yourselves before the people; but God knows your hearts: because that which is exalted among the people is abomination in the sight of God.

Mine

Matthew 12:36
And I say unto you, that every idle word whatsoever men shall speak, they shall give an account concerning the same in the day of judgment.
James 3:2
For we all fail in many things; if any one fails not in word, the same is a perfect man, able even to bridle the whole body.

I am perfect

Philippians 3:12
Not that I already received it, or have already been made perfect: but I persevere, if I may receive that for which I have indeed been received by Christ Jesus.

It shall

1 Timothy 6:5
wranglings of men having been corrupted as to their mind and turned away from the truth, considering that gain is godliness.