Thus The Law Ensures That All Are Found Guilty Before God (3:19-20).
The consequence of all that has been described is that all men without exception are found by ‘the Law' (the Scriptures) to be guilty before God. There is none righteous, no not one.
19 Now we know that what things soever the law saith, it saith to them who are under the law: that every mouth may be stopped, and all the world may become guiltyb before God.
20 Therefore by the deeds of the law there shall no flesh be justified in his sight: for by the law is the knowledge of sin.