Albert Barnes on Ephesians 1:16

Cease not to give thanks for you. In the prosperity of the church at Ephesus he could not but feel the deepest interest, and their welfare he never forgot.

Making mention of you in my prayers. Paul was far distant from them, and expected to see them no more. But he had faith in prayer, and he sought that they might advance in knowledge and in grace. What was the particular subject of his prayers he mentions in the following verses.