And He laid His right hand upon me, saying unto me, Fear not; – Revelation 1:17

“He laid His right hand upon me.” It is the hand of favor, it is also the hand of power. God gives strength to those who have none. He puts power into the faint. When the child of God is brought very low, it is not a mere subject for consideration or theme for reflection that can lift him up: sick men want more than instruction, they require cordials and supports. There must be actual strength and energy imparted to a swooning soul, and, glory be to God, by His own Holy Spirit, Jesus can and does communicate energy to His people in the time of weakness. He is come that we may have life, and that we may have it more abundantly. The omnipotence of God is made to rest upon us, so that we even glory in infirmities. “My grace is sufficient for thee, my strength is made perfect in weakness,” is a blessed promise, which has been fulfilled to the letter to many of us. Our own strength has departed, and then the power of God has flowed in to fill up the vacuum. I cannot explain the process: these are secrets and mysteries to be experienced rather than expounded; but as the coming of the Spirit of God into us first of all makes us live in regeneration, so the renewed coming of the power of God into our soul raises us up from our weakness and our faintness into fresh energy. Be thou encouraged, then, thou fainting spirit today. They that trust upon the Lord shall renew their strength. All power belongeth unto the Lord, and He will give it plenteously to those who have none of their own. Be of good courage and wait upon Him for none shall be ashamed who make Him their confidence. Then there followed a word from the Master’s own mouth. He spoke and said, “Fear not.” Here He applied the remedy to the disease. Christ Himself is our medicine, as well as our physician. His voice which stilled the sea, also casts out all our fears. ~ C.H. Spurgeon

https://www.blueletterbible.org/comm/spurgeon_charles/sermons/1028.cfm