The
Jews bragged about their relationship with God and relied on
(i.e., trusted in) the fact that He had given them (not the Gentiles) His written Law; But they did not keep His Laws demands!
Indeed their conduct was such as to cause the name of God to be blasphemed (i.e., to be spoke evil
of) among the Gentiles (Romans
The Jews served the Law with their lips but not with their lives (by their daily conduct).
Judged (or tested) by Gods Law , the Jews are shown to be justly
and certainly exposed to Gods wrath as the Gentiles are.
It does no good to have or to know the Law, unless one keeps its demands
(which requires perfect obedience).