Who also declared unto us your love in the Spirit - The love wrought in you by the Holy Spirit. It was not mere natural affection, but love worked in their hearts by the agency of the Holy Spirit.

Your love in the Spirit - So we preached, and so ye believed. The heavenly flame in the heart of this minister communicated itself to those who heard him; it was like priest like people. They enjoyed a spiritual, energetic ministry, and they were a spiritual people; they had a loving spirit, and love through the Spirit of God which dwelt in them. And of this love of theirs in the Spirit, and particularly towards the apostle, Epaphras gave full proof, not only by describing to the apostle the affection they felt for him, but in presenting to him those supplies which their love to him caused them to furnish.

(2) Who also declared unto us your love in the (e) Spirit.
(2) He declares his good will towards them, telling them that they must not still remain at one place, but go on further both in the knowledge of the Gospel, and also in the true use of it.
(e) Your spiritual love, or your love which comes from the Spirit.

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. This, he says, was in the Spirit; it was spiritual love, to distinguish it from a carnal and worldly one; they loved him for the spiritual grace that was in him, the spiritual gifts bestowed on him, the spiritual service he was engaged in, and the spiritual usefulness he was of: or they loved him in, and with their spirits, with all their hearts, sincerely, and without dissimulation; and though they had never seen him in the flesh, yet being, as it were, present with him in spirit, their affections were knit unto him: or this their love was "in the Holy Spirit", as the Ethiopic version reads it; it was a fruit of the Spirit of God, which he had implanted in their hearts in regeneration, as is also love to God, and likewise to Christ.

your love-- (Colossians 1:4); "to all the saints."
in the Spirit--the sphere or element IN which alone true love is found; as distinguished from the state of those "in the flesh" (Romans 8:9). Yet even they needed to be stirred up to greater love (Colossians 3:12-14). Love is the first and chief fruit of the Spirit (Galatians 5:22).

Your love in the Spirit - Your love wrought in you by the Spirit.