One of the most sobering facts about life is that all humans have a supernatural enemy whose aim is to use pain and pleasure to make us blind, stupid, and miserable forever. The bible calls him the devil and satan, the deceiver of the whole world and the accuser ( Revelation 13:9-10) the ruler of this world" ( John 12:31) and the god of this age ( 2 corinthians 4:4).
Satan tempts people to sin
This is what he did unsuccessfully to jesus in the wilderness he wanted him to abandon the path of suffering and obedience ( Matthew 4:1-11). This is what he did successfully to judas in the last hours of jesus life ( Luke 22:3-6).
And in 2 corinthians 11:3, Paul warns against this for all the believers: i am afraid that as the serpent deceived Eve by his cunning, your thoughts will be led astray from a sincere and pure devotion to christ.
He blinds the minds of unbelievers
The god of this age has blinded the minds of the unbelievers to keep them from seeing the light of the gospel of the glory of christ ( 2 corinthians 4:4). So he not only speaks what is false. He hides what is true. He keeps us from seeing the treasure of the gospel. He lets us see facts, even proofs but not preciousness.
Satan lies and is the father of lies
When he lies, he speaks according to his own nature for he is a liar and the father of lies (John 8:44). The first time satan appears in the Bible in Genesis 3, the first words on his lips are suspicious of the truth ( Did God say, you shall not eat of any tree in the garden?)
And the second words on his lips were a subtle falsehood ( you will not die). John says that satan has nothing to do with the truth, because there is no truth in him ( John 8:44). We are dealing with the essence of falsehood and deception.