Ephesians 3:14-21 (NIV) 16 I pray that out of his glorious riches he may strengthen you with power through his Spirit in your inner being
The power we possess is through the greatest power there is in existence—the Holy Spirit.
The Source of our strength is inexhaustible—His glorious riches.
Physical strength is of great benefit; inner strength has way much greater.
We need exercise if we are to be stronger. Prayer is one of the exercises that strengthen our inner man.
If we want to be stronger, we build our muscles; if we want to grow in our understanding of God, His love, His power, we need His Spirit.