Jewish boys formally began studying the Old Testament Scriptures when they were five years of age. Timothy had been taught the Scriptures by his mother and grandmother beginning at this age. The Scriptures alone are the source of spiritual knowledge. It is Scripture that does these things. Scripture is sufficient because it finds its source in God.
Scripture alone makes a person complete, capable, and proficient.
Scripture furnishes all that one must know to be saved and to grow in grace. But for us to receive eternal life through His words, they must be taken as He intended them to be taken. The above article is an example of the quality materials produced by Reasoning from the Scriptures Ministries.