NET
15 And his affection for you is much greater when he remembers the obedience of you all, how you welcomed him with fear and trembling.
Darby
15 and his affections are more abundantly towards you, calling to mind the obedience of you all, how with fear and trembling ye received him.
KJV
15 And his inward affection is more abundant toward you, whilst he remembereth the obedience of you all, how with fear and trembling ye received him.