In this passage in Acts, Paul launches into a prayer that is pointed. We discover that pointed prayer aims at deepening your knowledge of God and elevating your appreciation for His work in your life. What is the point of Paul’s prayer for wisdom and revelation? That a people who had been called out of one life and into a new life would possess a deeper knowledge of God.
His point here is not to be confused with a knowledge of the facts of God. Knowledge of the facts of God is not equal to knowledge of God personally, intimately, deeply. Paul is stressing the need for Christians to know God more deeply.