Yes, Satan is definitely real. The Scriptures indicate that the creature known as Satan did not always have that name. Rather, this descriptive name was given to him because of his taking a course of opposition and resistance to God. The name he had before this is not given. God is the only Creator, and ‘his activity is perfect,’ with no injustice or unrighteousness. (Deuteronomy 32:4) Therefore, the one becoming Satan was, when created, a perfect, righteous creature of God. He is a spirit person, for he appeared in heaven in the presence of God. (Job chapters1, 2; Revelation 12:9) Jesus Christ said of him: “That one was a manslayer when he began, and he did not stand fast in the truth, because truth is not in him.” (John 8:44; 1 John 3:8) Jesus here shows that Satan was once in the truth, but forsook it. Beginning with his first overt act in turning Adam and Eve away from God, he was a manslayer, for he thereby brought about the death of Adam and Eve, which, in turn, brought sin and death to their offspring. (Romans 5:12) Throughout the Scriptures the qualities and actions attributed to him could be attributed only to a person, not to an abstract principle of evil. It is clear that the Jews, and Jesus and his disciples, knew that Satan existed as a person.