The Hebrew verb avar (אָבַר) means to fly or soar powerfully — the kind of majestic, sustained flight associated with eagles. It is the root of ever (H83), meaning a wing or pinion.
The soaring eagle is one of Scripture's greatest metaphors for spiritual renewal. Isaiah 40:31 promises that those who wait on the LORD will mount up with wings like eagles. God bore Israel on eagles' wings out of Egypt (Exodus 19:4). Spiritual renewal enables believers to rise above earthly weakness through the empowering presence of God.