Intercessory prayer is the empowering act of praying on behalf of others. Releasing your faith to connect with someone else faith.
Jesus closed the gap between us and God when He died on the cross and HE JESUS took all power from the enemy and then gave us authority over the enemy. We (the body of Christ) are all connected spiritually and when we pray for one another we are blessing the whole body and not just someone else but our self as well.
That truth must be heard and actively presented in the church so that others can and will be blessed when we all pray for one another.
Please check out my hubs on this topic as well.
Thank you for your question. Another good question.