3:15 from a child. Timothy had been trained in the Old Testament Scriptures by his mother and grandmother (II Timothy 1:5) before any of them knew about Christ, but all three received Christ when they heard the gospel. This is a powerful testimony to the value of teaching God’s Word to young children.
3:15 Christ Jesus. The Scriptures in and of themselves do not bring salvation, but it is through the Scriptures that we learn of our Savior, the Lord Jesus Christ (note James 1:18; I Peter 1:23-25). The Scriptures are the initiation of our salvation, then they become the medium of our spiritual growth (II Timothy 3:16) and finally of our ultimate perfection (II Timothy 3:17) in Christ.