'In the Spirit' in the Bible

And when Silas and Timothy had come from Macedonia, Paul was pressed in the spirit and testified to the Jews that Jesus is the Christ.

This man was instructed in the way of the Lord. And being fervent in the spirit, he spoke and taught the things of the Lord diligently, knowing only the baptism of John.

After these things were ended, passing through Macedonia and Achaia, Paul purposed in the spirit to go to Jerusalem, saying, After I have come there, I must also see Rome.