Which - That is, Timothy. The connection requires us to understand this of him. Of the character of his father nothing is known.
Was well reported of - Was esteemed highly as a young man of piety and promise. Compare the notes on Acts 6:3. Compare 1 Timothy 5:10. Timothy had been religiously educated. He was carefully trained in the knowledge of the holy Scriptures, and was therefore the better qualified for his work, 2 Timothy 3:15.