Demons had been with the Most High God in Heaven before their rebellion. They knew both (1) Jesus in His pre-incarnate state, and they knew (2) the Most High God.
Luke 8
28 When he saw Jesus, he cried out and fell at his feet, shouting at the top of his voice, "What do you want with me, Jesus, Son of the Most High God? I beg you, don't torture me!"
Why didn't the demons say, "What do you want with me, Jesus, the Most High God? I beg you, don't torture me!"
Demons, who had been in heaven, knew there was one "Most High God" and that He had one Son.
Luke 8
28 When he saw Jesus, he cried out and fell at his feet, shouting at the top of his voice, "What do you want with me, Jesus, Son of the Most High God? I beg you, don't torture me!"
Why didn't the demons say, "What do you want with me, Jesus, the Most High God? I beg you, don't torture me!"
Demons, who had been in heaven, knew there was one "Most High God" and that He had one Son.