'In the Spirit' in the Bible

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

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

Wherefore I make known to you, that none speaking in the Spirit of God calls Jesus anathema: and none can say Lord Jesus, but in the Holy Spirit.

For he speaking in a tongue speaks not to men, but to God: (for none hears; and in the spirit he speaks mysteries.)

What therefore is it? I will pray with the spirit, and I will pray also with the mind: I will play on the harp in the spirit, and I will play also on the harp in the mind.

When if thou praise in the spirit, how shall he filling the place of the private individual say Amen at thy thanksgiving) since he knows not what thou sayest