The Hive is a Grimoire card from the original Destiny (Destiny 1), found under Enemies → Hive. Grimoire cards held most of the game's lore and were read on Bungie.net and in the companion app, not in the game itself.
Card text
The Hive are an ancient, festering evil. Their antipathy to the Light transcends hatred. To the Hive, the eternal struggle between Light and Dark is not only a war, it is a crusade - all Light must be devoured so Darkness can reclaim the universe.
Grimoire text written by Bungie, shown as it appears in the Destiny 1 game files.