12 *Rev 11.13;16.18;Is 13.10;Jl 2.10,31;3.15;Mt 24.29;Mk 13.24,25;Lk 21.25.When I saw the Lamb open the sixth seal, I looked and saw a great earthquake. The sun turned as dark as sackcloth,*6.12 sackcloth: A rough, dark-colored cloth made from goat or camel hair and used to make grain sacks. It was worn in times of trouble or sorrow. and the moon became red as blood. 13 *Is 34.4.The stars in the sky fell to earth, just like figs shaken loose by a windstorm.