It’s TIME to RENEW our STRENGTH like EAGLES: "Have you not known? Have you not heard? The everlasting God, the Lord, the Creator of the ends of the earth, neither faints nor is weary. His understanding is unsearchable. He gives power to the weak, and to those who have no might He increases strength. Even the youths shall faint and be weary, and the young men shall utterly fall, but those who wait on 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 40:28-31)
In Isaiah 40:28, God repeats these rhetorical questions for emphasis (see verse 21). God is not only everlasting (transcendent over time) but also the Creator of the ends of the earth (transcendent over space). He is omnipotent (all powerful) and meets all the needs of His people. God will never let His people down (Psalms 121:3, 4) as He gives both power and strength to the weak, and to those who do not rely in their own strength (Jer. 9:23).
To “wait on the Lord” refers to confident expectation and active hope in God for deliverance (Psalms 40:1). ‘Mount up’… ‘Run’… ‘Walk’ shows the spiritual transformation that faith brings to a person. The Lord gives both power and strength to those who trust in Him. The illustration of “mounting up with wings like eagle” depicts the strength that comes from the Lord. The Lord describes His deliverance of the Israelites in Exodus 19:4 as similar to being lifted up on the strong wings of an eagle. Also, in Psalms 103:5, the strength of people who are nourished by God is compared to the strength of the eagle, which is a common metaphor for strength (Deut. 32:11). God’s strength is available for all who prayerfully wait in patience for God’s purposes to be carried out!
In our personal lives, we may be weak like grass (Isaiah 40:6–8), sheep (v. 11), dust (v. 15), grasshoppers (v. 22), and even worms (41:14); but when we trust the power of God and wait on Him in prayer, we can be like an eagle, a runner, and a patient pilgrim (vv. 28–31). In the emergencies of life, God will help us to soar like eagles; in the race set before us He will help us to run with endurance (Heb. 12:1), and in the daily routine of life He will help us to patiently walk one step at a time (Psalms 1:1).
“Now to Him who is able to do exceedingly abundantly above all that we ask or think, according to the power that works in us, to Him be glory in the church by Christ Jesus to all generations, forever and ever. Amen.” (Eph 3:20-21)