To the one who overcomes in Pergamum, Jesus promises hidden manna and a white what?

Answer: Stone

He will give the hidden manna and a white stone inscribed with a new name, known only to the one who receives it.

“He who has an ear, let him hear what the Spirit says to the churches. To the one who overcomes, I will give the hidden manna. I will also give him a white stone inscribed with a new name, known only to the one who receives it.”— Revelation 2:17 (BSB)