1 Corinthians 12:3; 1 Corinthians 15:1

3 Therefore I make known to you that no one speaking by the Spirit of God says, "Jesus is accursed "; and no one can say, "Jesus is Lord ," except by the Holy Spirit.
1 Now I make known to you, brethren, the gospel which I preached to you, which also you received, in which also you stand,