Behold, He is coming with clouds, and every eye will see Him, even they who pierced Him. And all the tribes of the earth will mourn because of Him. Even so, Amen. - Revelation 1:7 KJV

https://biblehub.com/text/revelation/1-7.htm this is the original greek... i knew the bulgarian word "nebe" meaning sky and clouds are oblak/oblatsi but in greek it's "nephelon", and that means heavens, so it says "clouds" but it means the heavens and implicitly the stars

and by mourning they mean that they will be afraid of what they will lose, it also says "wailing" in the greek which means crying out in fear