What are these in bright array

Verse 1

What are these in bright array, This innumerable throng, Round the altar night and day, Hymning one triumphant song: "Worthy is the Lamb once slain, Blessing, honour, glory, power, Wisdom, riches, to obtain, New dominion every hour."

Verse 2

These through fiery trials trod; These from great affliction came; Now before the throne of God, Seal'd with His almighty name: Clad in raiment pure and white, Victor-palms in every hand, Through their dear Redeemer's might, More than conquerors they stand.

Verse 3

Hunger, thirst, disease unknown, On immortal fruits they feed; Them, the Lamb amidst the throne, Shall to living fountains lead; Joy and gladness banish sighs, Perfect love dispels all fear, And for ever from their eyes, God shall wipe away the tear.