1 Corinthians 2:14
But the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him: neither can he know [them], because they are spiritually discerned.

1 Corinthians 2:14
Now the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him; and he cannot know them, because they are spiritually judged.

1 Corinthians 1:18
For the preaching of the cross is to them that perish foolishness; but unto us which are saved it is the power of God.

1 Corinthians 1:25
Because the foolishness of God is wiser than men; and the weakness of God is stronger than men.

1 Corinthians 1:27
But God hath chosen the foolish things of the world to confound the wise; and God hath chosen the weak things of the world to confound the things which are mighty;

1 Corinthians 1:20
Where [is] the wise? where [is] the scribe? where [is] the disputer of this world? hath not God made foolish the wisdom of this world?

1 Corinthians 1:21
For after that in the wisdom of God the world by wisdom knew not God, it pleased God by the foolishness of preaching to save them that believe.

1 Corinthians 1:22
For the Jews require a sign, and the Greeks seek after wisdom:

1 Corinthians 1:23
But we preach Christ crucified, unto the Jews a stumblingblock, and unto the Greeks foolishness;

1 Corinthians 1:24
But unto them which are called, both Jews and Greeks, Christ the power of God, and the wisdom of God.

1 Corinthians 1:25
Because the foolishness of God is wiser than men; and the weakness of God is stronger than men.

Ephesians 6:

11 Put on the whole armour of God, that ye may be able to stand against the wiles of the devil.
12 For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places.