Revelation 9:11

For they had a king over them, the angel of the bottomless pit, whose name, in the Hebrew language, is Abaddon; and in the Greek, he has the name Apollyon.

Revelation 16:16

And he gathered them together into a place which is called, in the Hebrew language, Armageddon.

Treasury of Scripture Knowledge

Summary

And when he had given him licence, Paul stood on the stairs, and beckoned with the hand unto the people. And when there was made a great silence, he spake unto them in the Hebrew tongue, saying,

Bible References

Hebrew

Revelation 9:11
For they had a king over them, the angel of the bottomless pit, whose name, in the Hebrew language, is Abaddon; and in the Greek, he has the name Apollyon.
Revelation 16:16
And he gathered them together into a place which is called, in the Hebrew language, Armageddon.