7 Bible Verses about Overconfidence

They returned to Joshua, and said to him, "Do not let all the people go up; but let about two or three thousand men go up and strike Ai. Do not make all the people to toil there, for there are only a few of them." So about three thousand men of the people went up there, and they fled before the men of Ai.

Pride goes before destruction, and a haughty spirit before a fall.

But Peter answered him, "Even if all will be made to stumble because of you, I will never be made to stumble." Jesus said to him, "Truly I tell you that tonight, before the rooster crows, you will deny me three times."

He came to the disciples, and found them sleeping, and said to Peter, "What, could you not watch with me for one hour?

True; by their unbelief they were broken off, and you stand by your faith. Do not be conceited, but fear; for if God did not spare the natural branches, neither will he spare you.

Therefore let him who thinks he stands be careful that he does not fall.

Because you say, 'I am rich, and have gotten riches, and have need of nothing;' and do not know that you are wretched, miserable, poor, blind, and naked;