If i recall the temptation of Jesus in Matthew 4 has been explained as coming from His own sin nature rather than a real being called the Devil. Of course that is heresy.
Matthew 4: 1 Then Jesus was led by the Spirit into the wilderness to be tempted a by the devil. 2 After fasting forty days and forty nights, he was hungry. 3 The tempter came to him and said, “If you are the Son of God, tell these stones to become bread.”
4 Jesus answered, “It is written: ‘Man shall not live on bread alone, but on every word that comes from the mouth of God.’ b ”
5 Then the devil took him to the holy city and had him stand on the highest point of the temple. 6 “If you are the Son of God,” he said, “throw yourself down. For it is written:
“ ‘He will command his angels concerning you,
and they will lift you up in their hands,
so that you will not strike your foot against a stone.’ c ”
7 Jesus answered him, “It is also written: ‘Do not put the Lord your God to the test.’ d ”
8 Again, the devil took him to a very high mountain and showed him all the kingdoms of the world and their splendor. 9 “All this I will give you,” he said, “if you will bow down and worship me.”
10 Jesus said to him, “Away from me, Satan! For it is written: ‘Worship the Lord your God, and serve him only.’ e ”
11 Then the devil left him, and angels came and attended him.