1 Corinthians 1:21

For since the world through all its [earthly] wisdom failed to recognize God, God in His wisdom was well-pleased through the foolishness of the message preached [regarding salvation] to save those who believe [in Christ and welcome Him as Savior].

Matthew 11:25

At that time Jesus said, “I praise You, Father, Lord of heaven and earth [I openly and joyfully acknowledge Your great wisdom], that You have hidden these things [these spiritual truths] from the wise and intelligent and revealed them to infants [to new believers, to those seeking God’s will and purpose].

Luke 10:21

In that very hour He was overjoyed and rejoiced greatly in the Holy Spirit, and He said, “I praise You, O Father, Lord of heaven and earth, that You have hidden these things [relating to salvation] from the wise and intelligent, and have revealed them to infants [the childlike and untaught]. Yes, Father, for this way was [Your gracious will and choice, and was] well-pleasing in Your sight.

Daniel 2:20

Daniel answered,

“Blessed be the name of God forever and ever,
For wisdom and power belong to Him.

Romans 1:20-22

For ever since the creation of the world His invisible attributes, His eternal power and divine nature, have been clearly seen, being understood through His workmanship [all His creation, the wonderful things that He has made], so that they [who fail to believe and trust in Him] are without excuse and without defense.

Romans 1:28

And since they did not see fit to acknowledge God or consider Him worth knowing [as their Creator], God gave them over to a depraved mind, to do things which are improper and repulsive,

1 Corinthians 1:24

but to those who are the called, both Jews and Greeks (Gentiles), Christ is the power of God and the wisdom of God.

Ephesians 3:10

So now through the church the multifaceted wisdom of God [in all its countless aspects] might now be made known [revealing the mystery] to the [angelic] rulers and authorities in the heavenly places.

Romans 11:33

Oh, the depth of the riches and wisdom and knowledge of God! How unsearchable are His judgments and decisions and how unfathomable and untraceable are His ways!

Treasury of Scripture Knowledge

Summary

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.

The foolishness

1 Corinthians 1:18

General references

Bible References

The foolishness

For the message of the cross is foolishness [absurd and illogical] to those who are perishing and spiritually dead [because they reject it], but to us who are being saved [by God’s grace] it is [the manifestation of] the power of God.

General references

The Lord knows the thoughts of man,
That they are a mere breath (vain, empty, futile).

Be careful, therefore, that the light that is in you is not darkness.

But this [ignorant, contemptible] crowd that does not know the Law is accursed and doomed!”

Claiming to be wise, they became fools,