The Apostle Paul
Colossians 1:8BSB·traditional attribution

and who also informed us of your love in the Spirit.

John Calvin Reformed @genevareformer

Love in the Spirit I take to mean, spiritual love, according to the view of Chrysostom, with whom, however, I do not agree in the interpretation of the preceding words. Now, spiritual love is of such a nature as has no view to the world, but is consecrated to the service of piety, “Mais est commencee et comme consacree a l’adueu de la piete et...

Matthew Henry Presbyterian @wholebiblehenry

Here he proceeds to the body of the epistle, and begins with thanksgiving to God for what he had heard concerning them, though he had no personal acquaintance with them, and knew their state and character only by the reports of others. I. He gave thanks to God for them, that they had embraced the gospel of Christ, and given proofs of their fidelity to him.

Commenting on Colossians 1:3-8

John Gill Reformed Baptist @doctorgill

Who also declared unto us your love in the Spirit. Not only their love to God, and Christ, and to all the saints, which is before mentioned, but their love to the apostle; though they had only heard of him, and of his great capacity for, and faithfulness and usefulness in preaching of the Gospel, which had greatly endeared him to them.