'In the Spirit' in the Bible

What will ye? shall I come to you with a rod, or in love, and in the spirit of meekness?

For, I, indeed, - being absent in the body, but present in the spirit, have already judged, as present, him who, thus, this thing hath perpetrated: -

And such were some of you: but ye were washed, but ye were sanctified, but ye were justified in the name of the Lord Jesus Christ, and in the Spirit of our God.

Wherefore I make known unto you, that no man speaking in the Spirit of God saith, Jesus is anathema; and no man can say, Jesus is Lord, but in the Holy Spirit.

For he that speaketh in an unknown tongue speaketh not unto men, but unto God: for no man understandeth him; howbeit in the spirit he speaketh mysteries.

Very well then, I will pray in the Spirit, but I will also pray with my mind; I will sing praise in the Spirit, but I will also sing praise with my mind.

Otherwise if you bless in the spirit only, how will the one who fills the place of the ungifted say the “Amen” at your giving of thanks, since he does not know what you are saying?