It tells you twice in Rev, they come out of the Trib and wash...

It tells you twice in Rev, they come out of the Trib and wash their robes in the blood of the Lamb = they went through it dirty, clinging to lies.

Nup!
Washing their robes in the blood of the Lamb is part of the tribulation.

“These are they who have come out of the great tribulation; they have washed their robes and made them white in the blood of the Lamb.