1 Corinthians 1:18

16 And I baptized also the household of Stephanas: besides, I know not whether I baptized any other.

17 For Christ sent me not to baptize, but to preach the gospel: not with wisdom of words, lest the cross of Christ should be made of none effect.

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

19 For it is written, I will destroy the wisdom of the wise, and will bring to nothing the understanding of the prudent.

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?

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
For the message of the cross is foolishness to those who are perishing, but to us who are being saved it is the power of God.
KJV
For the preaching of the cross is to them that perish foolishness; but unto us which are saved it is the power of God.
WEB
For the word of the cross is foolishness to those who are dying, but to us who are being saved it is the power of God.
ASV
For the word of the cross is to them that perish foolishness; but unto us who are saved it is the power of God.
DARBY
For the word of the cross is to them that perish foolishness, but to us that are saved it is God's power.
BLB
For the word of the cross is foolishness to those indeed perishing, but to us, those being saved, it is the power of God.
ÅB
For ordet om korset er vel en dårskap for dem som går fortapt, men for oss som blir frelst, er det en Guds kraft;
OTB
For budskapet om korset synes som dårskap for de fortapte, men for oss som blir frelst, er det Guds kraft.
B1930
For ordet om korset er vel en dårskap for dem som går fortapt, men for oss som blir frelst, er det en Guds kraft;

Study notes (Tyndale)

Original text and word study

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