2 Timothy 1:5

5Calling to remembrance that unfeigned faith Not so much for the purpose of applauding as of exhorting Timothy, the Apostle commends both his own faith and that of his grandmother and mother; for, when one has begun well and valiantly, the progress he has made should encourage him to advance, and domestic examples are powerful excitements to urge him forward. Accordingly, he sets before him his grandmother Lois and his mother Eunice, by whom he had been educated from his infancy in such a manner that he might have sucked godliness along with his milk. By this godly education, therefore, Timothy is admonished not to degenerate from himself and from his ancestors.

It is uncertain whether, on the one hand, these women were converted to Christ, and what Paul here applauds was the commencement of faith, or whether, on the other hand, faith is attributed to them apart from Christianity. The latter appears to me more probable; for, although at that time everything abounded with many superstitions and corruptions, yet God had always his own people, whom he did not suffer to be corrupted with the multitude, but whom he sanctified and separated to himself, that there might always exist among the Jews a pledge of this grace, which he had promised to the seed of Abraham. There is, therefore, no absurdity in saying that they lived and died in the faith of the Mediator, although Christ had not yet been revealed to them. But I do not assert anything, and could not assert without rashness.

And I am persuaded that in thee also This clause confirms me in the conjecture which I have just now stated; for, in my opinion, he does not here speak of the present faith of Timothy. It would lessen that sure confidence of the former eulogium, if he only said that he reckoned the faith of Timothy to resemble the faith of his grandmother and mother. But I understand the meaning to be, that Timothy, from his childhood, while he had not yet obtained a knowledge of the gospel, was imbued with the fear of God, and with such faith as proved to be a living seed, which afterwards manifested itself.