If Satan is evil in Heaven and in the Bible it says there is no sin in Heaven, why did Satan sin then?

WOW!!! That is a very awesome question! And, to be quite honest with you, I don’t know the answer to that question and I don’t think anyone, other than Jesus, really knows. But, here’s what I do know to be true:

God absolutely hates sin. He cannot even be in its presence.
There is no sin in Heaven.
Satan was once God’s most perfect angel named Lucifer and he was cast out of Heaven because he sinned against God.
A third of the angels also sinned and were cast down to Earth with Satan.
Satan is also known as the “accuser of the brethren” because he gets to go to the Throne of God and point out the sinners to God but Jesus protects us by saying, No, Satan, you’re wrong, They are covered by my death.” (Job 1:6-12 and Revelation 12:7-9 tell some of the story!)

So, there are a lot of bible scholars who believe that there are different realms of Heaven and that when Lucifer sinned against God it was in one of the realms of Heaven but not Heaven itself. There are also some Bible scholars that believe the Throne of God isn’t in Heaven but just outside Heaven which would allow Satan to come close to Heaven without being able to get it to Heaven itself.

We have to remember that God is all-knowing, all-powerful and ever-present. He has an unstoppable plan for us and for Satan. Don’t forget…Satan is not God or the opposite of God. He is a created being just like you and me. God created Satan. Satan cannot create life, he is not all-knowing, he is not all-powerful and he cannot be in two places at once. Never, ever think that God and Satan are equal because they are not.

In fact, if God wanted to, He could make Satan disappear with just a thought. But, God has a plan for us all, including Satan, and God’s plan is perfect and unstoppable. We cannot ever imagine or begin to know why God does some of the things he does or allows some of the things he allows. We will never know, until we go to Heaven, why God allowed Satan to sin.