2 Results of Sin

1) Sin separates us from God (As Adam's sin did)

But your iniquities have separated between you and your God,

Isaiah 59:2

2) Sin separates us from our fellow man (As Cain's sin did)

And the LORD set a mark upon Cain,

Genesis 4:15

Or if his sin, wherein he hath sinned,

come to his knowledge; he shall bring his offering,

a kid of the goats, a male without blemish:

And he shall lay his hand upon the head of the goat,

and kill it in the place where they kill the burnt offering before the LORD:

it is a sin offering.

Leviticus 4:23,24