Strength for the long walk
But those who wait for Yahweh will renew their strength. They will mount up with wings like eagles. They will run, and not be weary. They will walk, and not faint.
This verse is often read as a crescendo: walking, then running, then flying. But Isaiah writes it the other way round. It starts with soaring and ends with walking.
That order is honest. There are days when faith feels like flight. More often, life is the long walk: the commute, the care, the work, the same tasks again tomorrow. Isaiah promises strength for those days too, and perhaps especially for them.
What waiting means
The strength comes to "those who wait". Waiting here isn't sitting idle. It carries the sense of hoping, looking towards, trusting. We keep walking while keeping our eyes on God.
If today feels like a walk rather than a flight, that isn't failure. It's the part of the promise you are living in.