May the Lord grant Onesiphorus His mercy on that day. You know very well how much he ministered to me in Ephesus.
KJV
The Lord grant unto him that he may find mercy of the Lord in that day: and in how many things he ministered unto me at Ephesus, thou knowest very well.
ASV
(the Lord grant unto him to find mercy of the Lord in that day); and in how many things he ministered at Ephesus, thou knowest very well.