No; it means that the violation of any of God's laws places the offender in the category of sinners. The writer is arguing with proud, self-righteous people who take credit to themselves for not committing certain sins. He shows them that in committing other sins that are not accounted by men so disgraceful, they are nevertheless sinners against God as surely as if they had committed the sins they condemn. A man who tells a lie has broken God's law and in that respect is under condemnation as the man is who commits a murder. Not that both are equally heinous, but that both stand on an equality in not being able to plead innocence before God. Both are sinners in need of mercy.