'In the Spirit' in the Bible

He shall go before him in the spirit and with the power of Elijah, 'to reconcile fathers to their children' and the disobedient to the wisdom of the righteous, and so make ready for the Lord a people prepared for him."

For he chose us in our union with Christ before the creation of the universe, that we might be holy and blameless in his sight, living in the spirit of love.

This, then, is the charge that I lay upon you, Timothy, my Child, in accordance with what was predicted of you--Fight the good fight in the spirit of those predictions,

For that was why the Good News was told to the dead also--that, after they have been judged in the body, as men are judged, they might live in the spirit, as God lives.