“The Lord Jesus Christ is there at the throne of God on our behalf, even while you are reading these words! Thus if you feel that your prayers are worthless, you should not despair. Indeed, none of us should ever feel that we may just as well give up praying, for somebody is in the gap for you and me.
This means that it is actually possible for us to wield enormous power in prayer by getting down into the gap with Him. There we can reflect His intercession….we can intercede only because He is already interceding for us.…we never intercede alone, but rather in union with Him….He is both praying for us as well as praying in us with His Spirit.”

Douglas F. Kelly, If God Already Knows Why Pray?