Theophylact of Bulgaria
Sin is not even fitting in you. For Christ appeared to destroy sin.
As He Himself had no share in sin, so for you, who have been united with Him and established by faith in Him, there remains no place for sinning.
This is what the words mean: "Everyone who abides in Him does not sin" (1 Jn 3:6).
It must also be known that sin is called a falling away from the good, while lawlessness is the violation of a positive law.
Both have one beginning: the one is a falling away from the good, and the other a transgression of a positive law.
Yet in essence both converge.
The sinner has deviated from the goal appointed according to nature and in nature. For the goal of human nature is to live according to reason, having driven irrationality far away.
Likewise the lawless man, rushing unrestrainedly toward evil, transgresses the law implanted in nature.