'In the Spirit' in the Bible

And he will go before his face in the spirit and power of Elijah, to turn the hearts of fathers to children, and the disobedient to the wisdom of the righteous, to make ready for the Lord a prepared people.

And he came in the Spirit into the temple; and when the parents brought in the child Jesus, to do for him according to the custom of the law,

And Jesus, full of the Holy Spirit, returned from the Jordan, and was led in the Spirit in the wilderness