But those who wait on the LORD will find new strength. They will fly high on wings like eagles. They will run and not grow weary. They will walk and not faint.Isaiah 40:31(NLT)
Whether the promises of God are for Israel or given to the Church, God's Word is true. His judgements are just, and His promises are "yes" and "amen", for those that trust His Word; wait on Him, abide in Him - and He in us. And although these words of comfort were given to the nation of Israel after Isaiah's repeated warning of coming punishment if the nation did not repent of their evil ways, nevertheless the Lord is a God of comfort and grace. He never goes back on His Word not does He grow weary - and in His loving-kindness He gives grace to the humble and He renews the strength of those that wait upon Him, by faith.
The Lord our God is faithful and true to His word and He satisfies our years with good things, so that our youth is renewed like that of an eagle. He is good to those who wait for Him; seek Him; trust Him and love Him, and He has promised that His grace is sufficient for us, no matter how weary we may become, for His power is perfected in our weakness.
God's grace is sufficient for every circumstance of life and any difficulty we may face. His grace is enough for all who place entire trust and confidence in His mighty strength; His grace, His provision and His beloved Son. It is the strength of the Lord Jesus Who sustains those that do not rely upon their own abilities but can admit to their own dis-ability - for His grace is sufficient in all of life's situations.
Those who confidently manage their Christian walk by relying on their own personal talents, skills, capacities and capabilities, eventually discover that their strength is insufficient for their needs. In time they are brought to the very end of themselves, until they can admit that the refreshment they desperately need has been drawn from the broken cistern of the old, Adamic-life and will eventually run dry, for the energy-source that is powered through the fleshly-self-life, will in time be drained of all its self-induced efforts.
When a believer truly identifies with his saviour and trusts in Christ's capacities alone for his journey through life, it is then that God's strength is made perfect in our weakness, it is then that the wind of God will lift us up on eagles’ wings and carry us through the stresses and strain of life, in His power.
It is when the man or woman of God is prepared to admit their weakness and incapacitates, that they are enabled by Him to draw from the bottomless well of His supply, and drink deeply from the living waters of God's provision. It is then that the spiritual battery is regenerated and renewed by Christ's limitless power, enabling us to run the race - and in His strength, to run to win the prize.
Loving Father I know that my strength can only be found in Christ. Help me, I pray, to trust implicitly in the power that I can only receive from my Lord, Christ Jesus – so that I may truly rise above all the difficulties of life and run with patient-endurance the race that is set before me, looking unto Jesus, Who is my only source of strength and my only means of refreshment, in His name if pray, AMEN.