Galatians 6:4

but let each prove his own work, and then he will have his boast in what belongs to himself alone, and not in what belongs to another.

1 Corinthians 11:28

But let a man prove himself, and thus eat of the bread, and drink of the cup.

2 Corinthians 13:5

examine your own selves if ye be in the faith; prove your own selves: do ye not recognise yourselves, that Jesus Christ is in you, unless indeed ye be reprobates?

Job 13:15

Behold, if he slay me, yet would I trust in him; but I will defend mine own ways before him.

Psalm 26:2

Prove me, Jehovah, and test me; try my reins and my heart:

Proverbs 14:14

The backslider in heart shall be filled with his own ways, and the good man from what is in himself.

Luke 18:11

The Pharisee, standing, prayed thus to himself: God, I thank thee that I am not as the rest of men, rapacious, unjust, adulterers, or even as this tax-gatherer.

1 Corinthians 1:12-13

But I speak of this, that each of you says, I am of Paul, and I of Apollos, and I of Cephas, and I of Christ.

1 Corinthians 3:21-23

So that let no one boast in men; for all things are yours.

1 Corinthians 4:3-4

But for me it is the very smallest matter that I be examined of you or of man's day. Nor do I even examine myself.

1 Corinthians 4:6-7

Now these things, brethren, I have transferred, in their application, to myself and Apollos, for your sakes, that ye may learn in us the lesson of not letting your thoughts go above what is written, that ye may not be puffed up one for such a one against another.

2 Corinthians 1:12

For our boasting is this, the testimony of our conscience, that in simplicity and sincerity before God, (not in fleshly wisdom but in God's grace,) we have had our conversation in the world, and more abundantly towards you.

2 Corinthians 11:12-13

But what I do, I will also do, that I may cut off the opportunity of those wishing for an opportunity, that wherein they boast they may be found even as we.

Galatians 6:13

For neither do they that are circumcised themselves keep the law; but they wish you to be circumcised, that they may boast in your flesh.

1 John 3:19-22

And hereby we shall know that we are of the truth, and shall persuade our hearts before him --

Treasury of Scripture Knowledge

Summary

But let every man prove his own work, and then shall he have rejoicing in himself alone, and not in another.

Bible References

Prove

Job 13:15
Behold, if he slay me, yet would I trust in him; but I will defend mine own ways before him.
1 Corinthians 11:28
But let a man prove himself, and thus eat of the bread, and drink of the cup.
2 Corinthians 13:5
examine your own selves if ye be in the faith; prove your own selves: do ye not recognise yourselves, that Jesus Christ is in you, unless indeed ye be reprobates?

Rejoicing

Proverbs 14:14
The backslider in heart shall be filled with his own ways, and the good man from what is in himself.
1 Corinthians 4:3
But for me it is the very smallest matter that I be examined of you or of man's day. Nor do I even examine myself.
2 Corinthians 1:12
For our boasting is this, the testimony of our conscience, that in simplicity and sincerity before God, (not in fleshly wisdom but in God's grace,) we have had our conversation in the world, and more abundantly towards you.
1 John 3:19
And hereby we shall know that we are of the truth, and shall persuade our hearts before him --

And not

Galatians 6:13
For neither do they that are circumcised themselves keep the law; but they wish you to be circumcised, that they may boast in your flesh.
Luke 18:11
The Pharisee, standing, prayed thus to himself: God, I thank thee that I am not as the rest of men, rapacious, unjust, adulterers, or even as this tax-gatherer.
1 Corinthians 1:12
But I speak of this, that each of you says, I am of Paul, and I of Apollos, and I of Cephas, and I of Christ.
1 Corinthians 3:21
So that let no one boast in men; for all things are yours.
1 Corinthians 4:6
Now these things, brethren, I have transferred, in their application, to myself and Apollos, for your sakes, that ye may learn in us the lesson of not letting your thoughts go above what is written, that ye may not be puffed up one for such a one against another.
2 Corinthians 11:12
But what I do, I will also do, that I may cut off the opportunity of those wishing for an opportunity, that wherein they boast they may be found even as we.