Yes.
The Bible teaches that Satan is a very real spirit creature or angel. Ezekiel 28:13-18. He is going to be turned to ash on the face of the earth and will be no more.
He rebelled in Eden (he was the guardian cherub assigned to care for humans not exploit them). He told them they could be gods and know good and evil for themselves. Revelation calls him the great dragon and the original serpent. Gen. 3:4, 5, Revelation chapter 12, 20:1-3, 7-9. It also says he is thrown into the abyss for the 1,000 years so he can't mislead the earth. (IF it was just a bad tendency in ourselves/imperfection, he could not be banished for that time and let loose after it to deceive us).
He got 1/3 of the angels to sin and they all forsook their original estate in heaven to go to earth and marry all the women they wanted. The result was violent giants the women gave birth to. (Rev. 12:3, 4, 9, 2 Peter 2:4, Jude 6, 7, Genesis 6:1-4, Job 1:6, 2:1)
Jesus was perfect/sinless and had no evil tendencies, had no mental illness, no inclination to wrong doing. Satan tried to stop him from following God and tempted and argued with him. Matthew chapter 4.
The Bible also speaks often of demon possession and Jesus having authority over Satan and the demons casting them out of people as well as curing people's illnesses and such. He is always spoken of as a real person
Satan and diabolos are the Greek words for adversary, opposer, slanderer. The title only is Christian, but not the existance of the spirit creature.
Job 1:6, 2:1 use the term Satan in the OT.in Christian Bibles. The Tanakkah translates Satan by its English meaning adversary. Means the same, but different language.
http://www.studylight.org/isb/bible.cgi?query=Job+1%3A6§ion=0&it=kjv&ot=bhs&nt=na
at# from (07853)
Transliterated Word Phonetic Spelling
Satan saw-tawn'
Parts of Speech TWOT
Noun Masculine 2252a
Definition
adversary, one who withstands
adversary (in general - personal or national)
superhuman adversary
Satan (as noun pr)
Translated Words
KJV (27) - Satan, 19; adversary, 7; withstand, 1;
NAS (27) - Satan, 18; accuser, 1; adversary, 8;
The online version uses Satan. My hard copy uses adversary.
Tanakkah
http://www.jewishvirtuallibrary.org/jsource/Bible/Job1.html
Job 1
8 And HaShem said unto Satan: 'Hast thou considered My servant Job, that there is none like him in the earth, a whole-hearted and an upright man, one that feareth G-d, and shunneth evil?'
Job 2
1 Again it fell upon a day, that the sons of G-d came to present themselves before HaShem, and Satan came also among them to present himself before HaShem.
Job 38
13 thou wast in Eden the garden of G-d; every precious stone was thy covering, the carnelian, the topaz, and the emerald, the beryl, the onyx, and the jasper, the sapphire, the carbuncle, and the smaragd, and gold; the workmanship of thy settings and of thy sockets was in thee, in the day that thou wast created they were prepared.
14 Thou wast the far-covering cherub; and I set thee, so that thou wast upon the holy mountain of G-d; thou hast walked up and down in the midst of stones of fire.
15 Thou wast perfect in thy ways from the day that thou wast created, till unrighteousness was found in thee.
The Scriptures say Satan, this cherub (a class of angels) was PERFECT to start with just like Jesus.
Devil is another word for him. John 8:44 He is said to be the lie and Father of the lie. He did not stand fast in the truth and is a murderer/manslayer.
There is at least 1 NT verse that calls him Devil and Satan both. I can't find it right now though.
Debbie
Though the term Satan may not be used in non Christian religions, almost all have some beings who were cast out of heaven and do harm. Wiccans, some more obscure Christian sects, maybe Christian Scientists I'm pretty sure) don't believe in him at all or just believe it is human's own bad inclination.