There are only three places a doctrine can come from: God, man, or Satan. It’s really easy to forget the last one.
Then the devil *took Him into the holy city and had Him stand on the pinnacle of the temple, and *said to Him, “If You are the Son of God, throw Yourself down; for it is written, ‘HE WILL COMMAND HIS ANGELS CONCERNING YOU’; and ‘ON their HANDS THEY WILL BEAR YOU UP, SO THAT YOU WILL NOT STRIKE YOUR FOOT AGAINST A STONE.’ Matt 4:5-6 (NASB)
The scriptures are the key to our salvation. It is no wonder that Satan himself would be an expert on the things contained within the Bible. “Know thy enemy” is a very profound concept and unfortunately works both ways. It should give one pause to see Satan above citing scripture so precisely. It shows much hubris that he actually thought he could deceive the Messiah by twisting scripture. We who are much lower than Yeshua will be attacked by Satan in the same way and will need to trust the Spirit to guide us into all truth.
There’s another reason Satan would know the Bible; he has watched it all unfold. Satan, a created being, has lived since at least the Garden of Eden, with some speculating he and the angels are much older than that. It is likely that Satan knew about the path for mankind’s salvation long before it was written down and passed to us through the Bible. This would explain why Sunday, Christmas, Easter, cross worship, and other false doctrines were started well before Jesus’ earthly ministry and the message going out to the nations. Since those false teachings were well underway under different names when Paul started his missionary journey, it was very easy for them to become blended into the faith once delivered. The Adversary is the most evil and cunning foe ever, and he is apparently very patient.
Since Satan, the author of lies, is working to confuse us and lead us astray, let us take great care in our walk. Recorded history and current events may look like they fulfill prophecies, but history and the media are not inspired sources. Surely many great events of earth’s history were planned by Yahweh in order to bring us to that marvelous day of Yeshua’s return, but we also need to remember that Satan has an active hand in the goings on of the planet as well. One example is how Jesus said He did not come to bring peace but a sword and that families would split over Him. This is true, but just because your family is splitting over religious disputes, that doesn’t prove one side right or wrong. In fact, both sides could be wrong if the family is splitting over two false religions!
Another caution is how desperate Satan will be in the last days. Helplessness leads to despair and, as Satan realizes how futile his efforts have been for the last 6000 years, he will become increasingly brazen. Do you know how helpless you feel right before something bad happens that you can’t prevent? This is how it will be with the Adversary as God’s plan unfolds before his eyes and there is nothing he can do about it. (Of course what is bad for Satan is good for everyone else!) In that state, a raging, helpless Satan is likely to do anything to take as many down with him as possible. So we need to take care and follow the words of the Savior:
Then if anyone says to you, ‘Behold, here is the Christ,’ or ‘There He is,’ do not believe him. For false Christs and false prophets will arise and will show great signs and wonders, so as to mislead, if possible, even the elect. Behold, I have told you in advance. So if they say to you, ‘Behold, He is in the wilderness,’ do not go out, or, ‘Behold, He is in the inner rooms,’ do not believe them. For just as the lightning comes from the east and flashes even to the west, so will the coming of the Son of Man be. Wherever the corpse is, there the vultures will gather. Matt 24:23-28 (NASB)