Man is not promised an endless supply of strength for him to store up. Rather, God promises to provide the necessary grace and strength for the present trials.
The eyes of the LORD are in every place. His eyes are upon all men’s ways: they are not hid from His face, neither is their iniquity hid from His eyes.
Most people assume the Lord’s actions are motivated almost solely because of His love for man. Yet, God works for His own glory and for His own name’s sake.
