For these are the two covenants: the one from Mount Sinai which gives birth to bondage, which is Hagar— Galatians 4:24 NKJV What did Paul mean by Mount Sinai? Many believe he was referring to the Ten Commandments. Was he? Paul speaks favorably of the Ten Commandments in Ephesians 6, and I doubt he would do so if he really thought they led to bondage. Paul also mentions Hagar.
Read more at the source: What Was Wrong With Sinai?