Galatians 6:3

For if any one seems to be something, being nothing, he deceives himself.

1 Corinthians 3:18

Let no one deceive himself. If any one seems to be wise among you in this age, let him become a fool, that he may be wise.

2 Corinthians 12:11

I have become a fool: you did compel me. For I ought to be commended by you: for I am not inferior to the very chief of the apostles, if indeed I am nothing.

Romans 12:3

For I speak, through the grace which has been given unto me, for every one who is among you, not to think of himself more highly than he ought to think; but to think soberly, as God has imparted to each one the measure of faith.

1 Corinthians 8:2

If any one seems to know anything, yet he knows not as it behooves him to know;

Galatians 2:6

But of those seeming to be something what they were at that time makes no difference to me: God does not receive the face of man: for those seeming to me to be prominent added nothing extra:

Luke 18:11

The Pharisee standing was praying in these words, God, I thank thee because I am not like the rest of the men, extortioners, unjust, adulterous, or even as this publican:

Romans 12:16

Have the same mind toward one another, not thinking high things, but condescending to the humble. Be not wise in your own conceits.

1 Corinthians 13:2

And if I have the gift of prophecy, and understand all mysteries, and all knowledge; and if I have all faith, so as to remove mountains, and have not divine love, I am nothing.

2 Corinthians 3:5

not that we are able of ourselves to think anything as from ourselves; but our sufficiency is of God;

2 Timothy 3:13

But wicked men and seducers will wax worse and worse, deceiving and being deceived.

James 1:22

But be doers of the word, and not hearers only, deceiving yourselves.

James 1:26

But if any one seems to be religious, bridling not his own tongue, but deceiving his own heart, the religion of that man is vain.

1 John 1:8

But if we say that we have no sin, we deceive ourselves, and the truth is not in us.

Treasury of Scripture Knowledge

Summary

For if a man think himself to be something, when he is nothing, he deceiveth himself.

General references

Bible References

If

Galatians 2:6
But of those seeming to be something what they were at that time makes no difference to me: God does not receive the face of man: for those seeming to me to be prominent added nothing extra:
Luke 18:11
The Pharisee standing was praying in these words, God, I thank thee because I am not like the rest of the men, extortioners, unjust, adulterous, or even as this publican:
Romans 12:3
For I speak, through the grace which has been given unto me, for every one who is among you, not to think of himself more highly than he ought to think; but to think soberly, as God has imparted to each one the measure of faith.
1 Corinthians 3:18
Let no one deceive himself. If any one seems to be wise among you in this age, let him become a fool, that he may be wise.
1 Corinthians 8:2
If any one seems to know anything, yet he knows not as it behooves him to know;

When

1 Corinthians 13:2
And if I have the gift of prophecy, and understand all mysteries, and all knowledge; and if I have all faith, so as to remove mountains, and have not divine love, I am nothing.
2 Corinthians 3:5
not that we are able of ourselves to think anything as from ourselves; but our sufficiency is of God;
2 Corinthians 12:11
I have become a fool: you did compel me. For I ought to be commended by you: for I am not inferior to the very chief of the apostles, if indeed I am nothing.

He deceiveth

1 Corinthians 3:18
Let no one deceive himself. If any one seems to be wise among you in this age, let him become a fool, that he may be wise.
2 Timothy 3:13
But wicked men and seducers will wax worse and worse, deceiving and being deceived.
James 1:22
But be doers of the word, and not hearers only, deceiving yourselves.
1 John 1:8
But if we say that we have no sin, we deceive ourselves, and the truth is not in us.

General references

1 Corinthians 3:7
So neither is the one planting, nor the one watering anything, but God the one giving the increase.