Adam Clarke on 2 Corinthians 1:16

To pass by you into Macedonia - He had purposed to go to Macedonia first, and then from Macedonia return to them, and probably winter in Corinth. Therefore we must understand the δι' ὑμων, by you, as implying that he would sail up the Aegean Sea, leaving Corinth to the west; though he might have taken it in his way, and have gone by land through Greece up to Macedonia. Some think that the meaning is, that he purposed to take Achaia in his way to Macedonia, without calling at Corinth; but Achaia was out of his way considerably, and he could scarcely go through Achaia without passing close by Corinth. I consider the words, therefore, as implying that he purposed not to call at Corinth at that time, but to pass by it, as before stated.