REV 7:9

9 After these things I looked, and, hinei, a great multitude, which to number no one was being able, out of every nation and from shevatim [(tribes)] and haumim [(the peoples)] and lashonot [(tongues)], standing before the Kes [(Throne)] and before the SEH [(Lamb)], each clothed with a kittel and lulavim in their hands.