He is deeply interested in mysticism.

He is a believer in Islam.

This concept is difficult.

The concept of Sufism represents the mystical aspect of Islam.

He showed his gratitude on his face.

He has difficulty expressing his emotions in words.

There is a beautiful mural painted on the side of this building.

That ancient ruin has a mysterious atmosphere.

She is fascinated by the mystery of ancient Egypt.

He strongly believes in egalitarianism.