Ufunuo 7:14

Nikamjibu, “Bwana, wewe wajua.” Naye akasema, “Hawa ni wale waliotoka katika ile dhiki kuu, nao wamefua mavazi yao katika damu ya Mwana-Kondoo na kuyafanya meupe kabisa.

And I said unto him, Sir, thou knowest. And he said to me, These are they which came out of great tribulation, and have washed their robes, and made them white in the blood of the Lamb.