NET
17 For Christ did not send me to baptize, but to preach the gospel—and not with clever speech, so that the cross of Christ would not become useless.
Darby
17 For Christ has not sent me to baptise, but to preach glad tidings; not in wisdom of word, that the cross of the Christ may not be made vain.
KJV
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.