Albert Barnes Commentary 2 Timothy 1:3

"I thank God, whom I serve from my forefathers in a pure conscience, how unceasing is my remembrance of thee in my supplications, night and day" — 2 Timothy 1:3 (ASV)

I thank God, whom I serve from my forefathers. Paul counted among his forefathers the patriarchs and the holy men of former times, as belonging to the same nation as himself; although he might also have included his more immediate ancestors, who, as far as is known, might have been distinguished examples of piety. His own parents, it is certain, took care that he was trained in the ways of religion. (Acts 26:4–5).

The phrase "from my forefathers" probably means, after the example of my ancestors. He worshipped the same God; he held substantially the same truths; he had the same hope of the resurrection and of immortality; he trusted in the same Savior having come, on whom they relied as about to come. His religion was not, therefore, different from theirs; it was the same religion carried out and perfected. The religion of the Old Testament and the New is essentially the same. .

With pure conscience. .

That without ceasing. (1 Thessalonians 5:17).

I have remembrance of you in my prayers night and day. .