The Apostle Paul
2 Corinthians 7:15BSB·traditional attribution

And his affection for you is even greater when he remembers that you were all obedient as you welcomed him with fear and trembling.

John Calvin Reformed @genevareformer

15. His bowels more abundantly. As the bowels are the seat of the affections, the term is on that account employed to denote compassion, love, and every pious affection. “The word σπλάγχνα,” as is observed by Barnes in his Notes on 2 Corinthians 6:12, “commonly means in the Bible the tender affections. The Greek word properly denotes the upper viscera — the heart, the lungs, the liver.

Matthew Henry Presbyterian @wholebiblehenry

In these verses the apostle endeavours to comfort the Corinthians, upon whom his admonitions had had such good effect. And in order thereto, 1. He tells them he had a good design in his former epistle, which might be thought severe, Co2 7:12.

Commenting on 2 Corinthians 7:12-16

John Gill Reformed Baptist @doctorgill

And his inward affection is more abundant toward you,.... Or "his bowels"; denoting the tenderness of his heart, the strength of his affections, which inwardly and to a very great degree moved towards them; especially whilst he remembereth the obedience of you all; to him, and to me by him; to the advice and orders given, which were so readily, cheerfully, and universally complied with...