“Now once in the end of the world hath He appeared to put away sin by the sacrifice of Himself. And as it is appointed unto men once to die, but after this the judgment: so Christ was once offered to bear the sins of many; and unto them that look for Him shall He appear the second time without sin unto salvation.”- Hebrew 9:26-28

The text says, “He hath appeared”; and again, “He shall appear.” Between these two lights-“He hath appeared” and “He shall appear”-we shall sail safely, if the Holy Spirit will direct our way. By faith we first look to Jesus, and then for Jesus; and herein is the life of our spirits. Christ on the cross of shame, and Christ on the throne of glory, we dwell between these two boundaries: these are our Dan and Beersheba, and all between is holy ground. As for our Lord’s first coming, there lies our rest: the once-offered Sacrifice hath put away our sin and made our peace with God. As for His second coming, there lies our hope, our joy; for we know that when He shall appear, we shall be like Him, for we shall see Him as He is. The glories of His sacred royalty shall be repeated in all the saints; for He hath made us unto our God kings and priests: and we shall reign with Him for ever and ever. At His first advent we adore Him with gratitude rejoicing in “God with us”, as making Himself to be our near kinsman. We gather with grateful boldness around the infant in the manger and behold our God. But in the second advent we are struck with a solemn reverence, a trembling awe. We are not less grateful, but we are more prostrate as we bow before the majesty of the triumphant Christ. Jesus in His glory is an overpowering vision. John, the beloved disciple, writes, “When I saw Him, I fell at His feet as dead.” We could have kissed His feet till He quitted us on Olivet; but at the sight of the returning Lord, when heaven and earth shall flee away, we bow in lowliest adoration. His first appearing has given us that life and holy confidence with which we press forward to His glorious appearing, which is the crown of all. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/2194.cfm