Wherefore I give you to understand, that no man speaking by the Spirit of God calleth Jesus accursed: and that no man can say that Jesus is the Lord, but by the Holy Ghost.
1 Corinthians 12:3
King James Version (public domain)
Traditionally attributed to Paul · 1st century AD · Thirteen epistles of the New Testament are traditionally attributed to him
Context
1Now concerning spiritual gifts, brethren, I would not have you ignorant.
2Ye know that ye were Gentiles, carried away unto these dumb idols, even as ye were led.
3Wherefore I give you to understand, that no man speaking by the Spirit of God calleth Jesus accursed: and that no man can say that Jesus is the Lord, but by the Holy Ghost.
4Now there are diversities of gifts, but the same Spirit.
5And there are differences of administrations, but the same Lord.