2 Corinthians 12:9 And he said unto me, My grace is sufficient for thee: for my strenght is made perfect in weakness. Most gladly therefore will I rather glory in my infirmities, that the power of Christ may rest upon me.
The flesh and the spirit seem to me like a see saw when one is up the other is down. When we sit on our flesh our spirit is stong, when we sit on our spirit our flesh is strong. When we make our flesh weak we are our strongest in Jesus!!!