…and all kindreds of the earth shall wail because of Him. Even so, Amen. – Revelation 1:7

“All kindreds of the earth shall wail because of Him.” “All kindreds of the earth.” Then this sorrow will be very general. You thought, perhaps, that when Christ came, He would come to a glad world, welcoming Him with song and music. You thought that there might be a few ungodly persons who would be destroyed with the breath of His mouth, but that the bulk of mankind would receive Him with delight. See how different— “All kindreds of the earth,” that is, all sorts of men that belong to the earth! All earth‐born men. Men out of all nations and kindreds and tongues shall weep and wail and gnash their teeth at His coming! O Sirs, this is a sad outlook! We have no smooth things to prophesy. What do you think of this?

All the kindreds of the earth shall wail—wail as a mother laments over her dead child—wail as a man might wail who found himself hopelessly imprisoned and doomed to die! Such will be the hopeless grief of all the kindreds of the earth at the sight of Christ in the clouds! If they remain impenitent, they shall not be able to be silent—they shall not be able to repress or conceal their anguish. They shall wail or openly give vent to their horror! What a sound that will be which will go up before high Heaven when Jesus sits upon the cloud and, in the fullness of His power, summons them to judgment! Then “they shall wail because of Him.”

Will your voice be heard in that wailing? Will your heart be breaking in that general dismay? How will you escape? If you are one of the kindreds of the earth and remain impenitent, you will wail with the rest of them! Unless you now fly to Christ and hide yourself in Him and so become one of the kindred of Heaven—one of His chosen and blood‐washed ones who shall praise His name for washing them from their sins—unless you do this, there will be wailing at the Judgment Seat of Christ and you will be in it! ~ C.H. Spurgeon

https://www.blueletterbible.org/comm/spurgeon_charles/sermons/1989.cfm