Why God Allows Sin

Why has God allowed sin?

God created man for fellowship. As we explore this idea, it’s important to understand the definition of fellowship.

Fellowship -- The companionship of individuals in a congenial atmosphere and on equal terms.
A close association of friends or equals sharing similar interests.
Friendship; comradeship.

It’s interesting that God created both man and Angels with the ability to choose between good and evil, yet the Angels are workers with no chance of salvation; that’s reserved specifically for mankind.

While God is not the author of sin, in His divine purpose He has to allow sin in order for man to be redeemable. If God stopped man from sinning, he just made a robot, and God doesn’t make robots. You can’t have fellowship with someone you make think the same way as you. Therefore, in order to have true fellowship with His creation, He has to allow us the ability to fall away, so He can soften our hearts with His Holy Spirit, so that when we react to the faith that He gives us, we want to have fellowship with God.

Jeremiah 31:33-34 states:
33"This is the covenant I will make with the house of Israel
after that time," declares the LORD.
"I will put my law in their minds
and write it on their hearts.
I will be their God,
and they will be my people.
34 No longer will a man teach his neighbor,
or a man his brother, saying, 'Know the LORD,'
because they will all know me,
from the least of them to the greatest,"
declares the LORD.
"For I will forgive their wickedness
and will remember their sins no more."
In God’s divine purpose, He had to allow Adam to sin, so He could give us His law, which would convict us of our sin, so we could realize we needed a way back to God, so He could give us a Savior which would lead us back to Him. In our depravity, we would realize we needed fellowship to survive and that fellowship that we need could only be with God; and when our sin breaks us, we cry out to God for Him to save us from ourselves; then and only then can we realize that we not only need fellowship with God, but we want fellowship with God. And when we want it, that’s when true fellowship can happen; which is what He created us for.
Long way around a short answer.