Mark 3:11

And the unclean spirits, whenever they saw Him, fell down before Him and cried out, saying, "You are the Son of God."

Surrounding context

3:10 For He healed many, so that as many as had afflictions pressed about Him to touch Him.

3:11 And the unclean spirits, whenever they saw Him, fell down before Him and cried out, saying, "You are the Son of God."

3:12 But He sternly warned them that they should not make Him known.