Many people are not sure what sin actually is. Sin is more than the act of wilful disobedience. Sin has a personality and it has desires. If we are not remitting sins, we’re missing a very, very important part of the gospel of Jesus Christ:
Luke 24:45-47 King James Version (KJV)
45 Then opened he their understanding, that they might understand the scriptures,
46 And said unto them, Thus it is written, and thus it behooved Christ to suffer, and to rise from the dead the third day:
47 And that repentance and remission of sins should be preached in his name among all nations, beginning at Jerusalem.
You can find videos of the remission of sins, which is the expelling of spirits here.
Once we accept Jesus Christ as our Lord, he gives us the power to remit and retain sins:
John 20:22-23 King James Version (KJV)
22 And when he had said this, he breathed on them, and saith unto them, Receive ye the Holy Ghost:
23 Whose soever sins ye remit, they are remitted unto them; and whose soever sins ye retain, they are retained.
Remission simply means transfer. All true believers have the power to remit sins, which is to expel demons. Before the time of Jesus Christ, no one could remit sins:
Mark 1:25-27 King James Version (KJV)
24 Saying, Let us alone; what have we to do with thee, thou Jesus of Nazareth? art thou come to destroy us? I know thee who thou art, the Holy One of God.
25 And Jesus rebuked him, saying, Hold thy peace, and come out of him.
26 And when the unclean spirit had torn him, and cried with a loud voice, he came out of him.
27 And they were all amazed, insomuch that they questioned among themselves, saying, What thing is this? what new doctrine is this? for with authority commandeth he even the unclean spirits, and they do obey him.
That’s why in the old testament the people were required to stone anyone who committed adultery and other sins. This is also why lepers had to be removed from the community. Once a spirit has entered a person, there was no way the spirit could be removed from the person. This is still the case for people in the world who do not have Jesus Christ.
The spirits that come into a person, whether the person believes in Jesus Christ or not, are very powerful and they influence people to do things which they do not want to do:
Romans 7:18-20 King James Version (KJV)
18 For I know that in me (that is, in my flesh,) dwelleth no good thing: for to will is present with me; but how to perform that which is good I find not.
19 For the good that I would I do not: but the evil which I would not, that I do.
20 Now if I do that I would not, it is no more I that do it, but sin that dwelleth in me.
Jesus Christ came so that we can remove sin, that is spiritual corruption, from our flesh. This is the true meaning of remitting sins.