The Volucella is an insect that has a strong resemblance to the humble bee. They too eat the nectar of flowers. They abuse this resemblance to introduce themselves fraudulently into the bee nests, and they deposit their eggs there. The bees do not seem to identify the foreign insect. It looks like they trust them, for they meet on top of flowers, eating the same nectar and making friends there. When these eggs have hatched, their larvae, which have two mandibles, devour the larvae of their hosts, the bees.
This is the return they make for the hospitality they have received!
Be careful with false brethren, false prophets and deceivers! They take advantage of your hospitality and come to parasite your home, changing its atmosphere and bringing strange, poisonous ideas.
“Test all spirits for not are from God!” (1Jn 4:1)