Prayer, in some mysterious way, activates some of God’s work on earth, and pushes back Satan’s efforts to hurt and destroy God’s people. God doesn’t necessarily need our prayers to do this, but He chooses to work in concert with them to accomplish His work in the world. There is no substitute for prayer, especially in circumstances that seem impossible.
Matthew 16:19 (NKJV) And I will give you the keys of the kingdom of heaven, and whatever you bind on earth will be bound in heaven, and whatever you loose on earth will be loosed in heaven.
Philippians 4:6-7 (NLT) Don't worry about anything; instead, pray about everything. Tell God what you need, and thank Him for all He has done. Then you will experience God's peace, which exceeds anything we can understand. His peace will guard your hearts and minds as you live in Christ Jesus.
Dee Richardson, Voice of the Dove