Observe the expression, If a soul shall sin; meaning no doubt that all sin is the sin of the soul. Micah 6:7. And it is the soul that is hurt by it. Proverbs 8:36. And it is the soul that is liable to death by it. Ezekiel 18:4.
Related Commentaries of Leviticus 4:1
Leviticus 4:1-2
1 And the LORD spake unto Moses, saying,
2 Speak unto the children of Israel, saying, If a soul shall sin through ignorance against any of the commandments of the LORD concerning things which ought not to be done, and shall do against any of them: