1 Corinthians 1:16 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.
Paul stated here saying he also might have baptized some others but that was not his primary purpose because baptizing does not save someone. Paul’s primary purpose, as should be ours, was to preach the gospel so people would be convicted in their hearts and repent of their sins and receive forgiveness. He also help establish other churches and hopefully equip them with people to carry on the the work of spreading the gospel. He let the people know that is not just the words that save you but the accepting of what Jesus did for us on the cross the that gives us our salvation. Salvation comes from believing Jesus in our heart and confessing this with our mouth and this is the only way to receive the salvation provided for us as a free gift from God.