[God] gives power to the faint,
and strengthens the powerless.
Even youths will faint and be weary,
and the young will fall exhausted;
but those who wait for the LORD shall renew their strength,
they shall mount up with wings like eagles,
they shall run and not be weary,
they shall walk and not faint.
Isaiah 40 is the Romans 8 of the Old Testament. It is a great chapter of encouragement for God’s people. Like Romans 8, Isaiah 40 ends on a momentous, uplifting note, speaking about the hard places of life where we live. We need to take into our heart and bones all these great passages are telling us.
The point at the end of Isaiah 40 is that God will give us the needed spiritual and physical strength to keep on keeping on, regardless of what we’ve went through and what we’re facing.
Oftentimes our weariness is a combination of being tired in spirit and in body. I can overcome a lot of physical tiredness if I feel strong, good, or okay in spirit. But when I’m down in spirit, then physical strength seems hard to come by.
We’re told to hope in or wait for God. That as we do so, God will renew our strength. It’s a strength of resolve to keep on going in the midst of difficulty, whether discouragement, doubt, even despair. As we wait on the Lord, the Lord will give us the resolve and ability we need.
Physical rest and asking for prayer from a good friend or one who is mentoring/directing us are important. While we also look at the great encouragement Scripture passages like this give to us, right where we live no less. In and through Jesus.