“And that from a child thou hast known the holy scriptures, which are able to make thee wise unto salvation through faith which is in Christ Jesus.”
King James Version (KJV)
3:15 From an infant thou hast known the holy scriptures - Of the Old Testament. These only were extant when Timothy was an infant. Which are able to make thee wise unto salvation, through faith in the Messiah that was to come. How much more are the Old and New Testament together able, in God's hand, to make us more abundantly wise unto salvation! Even such a measure of present salvation as was not known before Jesus was glorified.
2Ti 3:15 And that from a child thou hast known. Taught by his grandmother, Lois, and his mother, Eunice, he had learned to know the Scriptures from childhood (2Ti 1:5). The holy scriptures. The Books given by inspiration. The Jewish Scriptures are primarily meant, but a part of the New Testament was already written. Which are able to make thee wise unto salvation. Give thee the wisdom that leads to salvation. If the Old Testament could make him wise, how much more the New Testament! Through faith which is in Christ Jesus. This is essential. Unless the Scriptures lead to Christ, there is no salvation.