Paul's prayer expresses a very strong desire that his friends advance toward spiritual maturity. Wisdom is gained through the teaching ministry of the Holy Spirit. The Holy Spirit then uses the facts of Scripture to provide wisdom and prudence in the Christian's life. The Word of God becomes a tool or weapon with which to make correct decisions in life and to solve problems, all according to the divine wisdom of God which is within. The Lord provides abundant wisdom as part of His grace plan for believers.
Bible doctrine is useful only when it produces edification, that is, applied knowledge.
A Christian becomes wise when he learns and believes Bible truth while walking in fellowship. The Holy Spirit makes application, producing discernment and prudence. But if any of you lacks wisdom, let him ask of God, who gives to all men generously and without reproach, and it will be given to him. I do not cease being grateful on your behalf, calling up a remembrance of you in my prayers. In order that the God of our Lord Jesus Christ may give you the spirit of wisdom and revealed truth in full knowledge from Him.