And He saw that there was no man, and wondered that there was no intercessor: therefore His arm brought salvation unto Him; and His righteousness, it sustained Him. -Isaiah 59:16

When did Christ’s love begin to work for us? It was long before we were born, long before the world was created; far, far back, in eternity, our Saviour gave the first proof of His love to us by espousing our cause. By His divine foresight, He looked upon human nature as a palace that had been plundered, and broken down, and in its ruins He perceived the owl, the bittern, the dragon, and all manner of unclean things. Who was there to undertake the great work of restoring that ruined palace? No one but the Word, who was with God, and who was God. “He saw that there was no man, and wondered that there was no intercessor: therefore His own arm brought salvation unto Him; and His righteousness, it sustained Him.” Ere the angels began to sing, or the sun, and moon, and stars threw their first beams athwart primeval darkness, Christ espoused the cause of His people, and resolved not only to restore to them all the blessings that He foresaw that they would lose, but also add to them richer favours that could ever have been theirs except through Him.

Jesus Christ, “that great Shepherd of the sheep, through the blood of the everlasting covenant,” undertook to redeem and guard the whole flock entrusted to His care, so that when, at the last great muster, they should pass under the hand of Him that telleth them, not one of them should be missing, and the blessed Shepherd-Son should be able to say to His Father, “Those that Thou gavest me I have kept, and not one of them is lost.” It was in the everlasting covenant that our Lord Jesus Christ became our Representative and Surety and engaged on our behalf to fulfill all His Father’s will; and as we think of this great mystery of mercy, surely all of us who are truly His must exclaim with grateful adoration, “Behold how He loved us!”~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/3228.cfm