Galatians 6:4

But let every man make test of his work, and then will his cause for glory be in himself only, and not in his neighbour.

1 Corinthians 11:28

But let no man take of the bread and the cup without testing himself.

2 Corinthians 13:5

Make a test of yourselves, if you are in the faith; make certain of yourselves. Or are you not conscious in yourselves that Jesus Christ is in you, if you are truly Christ's?

Job 13:15

Truly, he will put an end to me; I have no hope; but I will not give way in argument before him;

Psalm 26:2

Put me in the scales, O Lord, so that I may be tested; let the fire make clean my thoughts and my heart.

Proverbs 14:14

He whose heart is turned away will have the reward of his ways in full measure; but a good man will have the reward of his doings.

Luke 18:11

The Pharisee, taking up his position, said to himself these words: God, I give you praise because I am not like other men, who take more than their right, who are evil-doers, who are untrue to their wives, or even like this tax-farmer.

1 Corinthians 1:12-13

That is, that some of you say, I am of Paul; some say, I am of Apollos; some say, I am of Cephas; and some say, I am Christ's.

1 Corinthians 3:21-23

So let no one take pride in men. For all things are yours;

1 Corinthians 4:3-4

But it is a small thing to me that I am judged by you or by man's judging; I am not even a judge of myself.

1 Corinthians 4:6-7

My brothers, it is because of you that I have taken Apollos and myself as examples of these things, so that in us you might see that it is not wise to go farther than what is in the holy Writings, so that no one of you may be lifted up against his brother.

2 Corinthians 1:12

For our glory is in this, in the knowledge which we have that our way of life in the world, and most of all in relation to you, has been holy and true in the eyes of God; not in the wisdom of the flesh, but in the grace of God.

2 Corinthians 11:12-13

But what I do, that I will go on doing, so that I may give no chance to those who are looking for one; so that, in the cause of their pride, they may be seen to be the same as we are.

Galatians 6:13

Because even those who undergo circumcision do not themselves keep the law; but they would have you undergo circumcision, so that they may have glory in your flesh.

1 John 3:19-22

In this way we may be certain that we are true, and may give our heart comfort 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
Truly, he will put an end to me; I have no hope; but I will not give way in argument before him;
1 Corinthians 11:28
But let no man take of the bread and the cup without testing himself.
2 Corinthians 13:5
Make a test of yourselves, if you are in the faith; make certain of yourselves. Or are you not conscious in yourselves that Jesus Christ is in you, if you are truly Christ's?

Rejoicing

Proverbs 14:14
He whose heart is turned away will have the reward of his ways in full measure; but a good man will have the reward of his doings.
1 Corinthians 4:3
But it is a small thing to me that I am judged by you or by man's judging; I am not even a judge of myself.
2 Corinthians 1:12
For our glory is in this, in the knowledge which we have that our way of life in the world, and most of all in relation to you, has been holy and true in the eyes of God; not in the wisdom of the flesh, but in the grace of God.
1 John 3:19
In this way we may be certain that we are true, and may give our heart comfort before him,

And not

Galatians 6:13
Because even those who undergo circumcision do not themselves keep the law; but they would have you undergo circumcision, so that they may have glory in your flesh.
Luke 18:11
The Pharisee, taking up his position, said to himself these words: God, I give you praise because I am not like other men, who take more than their right, who are evil-doers, who are untrue to their wives, or even like this tax-farmer.
1 Corinthians 1:12
That is, that some of you say, I am of Paul; some say, I am of Apollos; some say, I am of Cephas; and some say, I am Christ's.
1 Corinthians 3:21
So let no one take pride in men. For all things are yours;
1 Corinthians 4:6
My brothers, it is because of you that I have taken Apollos and myself as examples of these things, so that in us you might see that it is not wise to go farther than what is in the holy Writings, so that no one of you may be lifted up against his brother.
2 Corinthians 11:12
But what I do, that I will go on doing, so that I may give no chance to those who are looking for one; so that, in the cause of their pride, they may be seen to be the same as we are.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain