Now while I was speaking, praying, and confessing my sin … and presenting my supplication before the Lord. … the man Gabriel … informed me, and talked with me, and said, “O Daniel, I have now come forth to give you skill to understand.” Daniel 9:20-22
A predictable question from new Christians involves prayer: “If God already knows everything, why do I need to tell Him everything in prayer?” It’s a reasonable question. It suggests that the purpose of prayer is to convey information to God about our needs; information that will cause Him to move into action to meet those needs.
Jesus Himself addressed this question in His teaching to His followers in the early days of His ministry: “For your Father knows the things you have need of before you ask Him” (Matthew 6:8). Clearly, the purpose of prayer is not to convey information to God. The prophet Daniel learned the same thing. When he was praying for an end to the Jews’ captivity in Babylon (Daniel 9:4-19), the angel Gabriel appeared to him while he was still praying with the answer to his prayer: “As soon as you began to pray, a word went out” (Daniel 9:23, NIV).
When you pray, be assured that God knows your need. Speak with God more than to God.
Prayer without thanksgiving is like a bird without wings. William Hendriksen
John MacArthur – Daniel 9 (interpreting Bible prophecy literally)