REV 7:14

14 I answered him, “Sir, [I do not know. Surely] you know [who they are]!” He said to me, “These are the people ◄whom [others] have caused to suffer greatly/who [have been persecuted]►. [Because they believed that Jesus, the one who is like a sacrificial] lamb, [atoned for our sin when] his blood [flowed from his body when he died, it is as though] [MET] they have washed their robes and have made them [clean and] white.