1 Corinthians 2:1-5
And so it was with me, brothers and sisters. When I came to you, I did not come with eloquence or human wisdom as I proclaimed to you the testimony about God. 2 For I resolved to know nothing while I was with you except Jesus Christ and him crucified. 3 I came to you in weakness with great fear and trembling. 4 My message and my preaching were not with wise and persuasive words, but with a demonstration of the Spirit’s power, 5 so that your faith might not rest on human wisdom, but on God’s power.
Matthew 28:18-20
(18) Then Jesus came to them and said, “All authority in heaven and on earth has been given to me. (19) Therefore go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, (20) and teaching them to obey everything I have commanded you. And surely I am with you always, to the very end of the age.”
Acts 1:8
(8) But you will receive power when the Holy Spirit comes on you; and you will be my witnesses in Jerusalem, and in all Judea and Samaria, and to the ends of the earth.”