Romans 3: 1-2 Then what advantage has the Jew? Or what is the value of circumcision?  Much in every way. To begin with, the Jews are entrusted with the oracles of God.
2 Timothy 3: 14-17 But as for you, continue in what you have learned and have firmly believed, knowing from whom you learned it  and how from childhood you have been acquainted with the sacred writings which are able to instruct you for salvation through faith in Christ Jesus.  All scripture is inspired by God and profitable for teaching, for reproof, for correction, and for training in righteousness,  that the man of God may be complete, equipped for every good work.
1 Samuel 13: 1