Verses with the word fools in the New Testament (8 verses):

Matthew 23:17
Ye fools and blind: for whether is greater, the gold, or the temple that sanctifieth the gold?

Matthew 23:19
Ye fools and blind: for whether is greater, the gift, or the altar that sanctifieth the gift?

Luke 11:40
Ye fools, did not he that made that which is without make that which is within also?

Luke 24:25
Then he said unto them, O fools, and slow of heart to believe all that the prophets have spoken:

Romans 1:22
Professing themselves to be wise, they became fools,

1 Corinthians 4:10
We are fools for Christ's sake, but ye are wise in Christ; we are weak, but ye are strong; ye are honourable, but we are despised.

2 Corinthians 11:19
For ye suffer fools gladly, seeing ye yourselves are wise.

Ephesians 5:15
See then that ye walk circumspectly, not as fools, but as wise,