Prayer is the key to heaven and faith can unlock that door. Prayer revivals are important for the church. Something happens when we give ourselves to praying for the lost, for revival, for ourselves.
If you look to the past days of Pentecostal history, you will find prayer to be a key factor in the powerful events that took place during their days.
We have to careful that we do not buy into lesser substitutes for prayer. Prayer is a place of surrender and there are a lot of problems and difficulties in our lives that would be resolved if we were given to prayer.
2 Chronicles 7:14 KJV If my people, which are called by my name, shall humble themselves, and pray, and seek my face, and turn from their wicked ways; then will I hear from heaven, and will forgive their sin,and will heal their land.