Sometimes life's pain can be so physically and/or emotionally draining that something needs to give... quickly. When even the best of human efforts makes little difference, there is always something we can do - "cry out" to the Lord.
While the enemy is voicing what you lack, God is voicing what you have! And right now you have green grass UNDER YOU. The finished work of Jesus Christ is literally UNDER YOU and IN YOU. Sit in it.
