By what means did the Jews know God's will?

Answer

"Behold, thou art called a Jew, and rests in the law, and makes thy boast of God, and knows His will. . . .
being instructed out of the law." Rom. 2: 17, 18.

Why did Israel fail to attain unto righteousness?
What saved the people from the predicted overthrow?
Who was the seed here referred to?
How did Christ Himself say He would come?
Why was this to be?
To what place did Jesus retire for secret devotion?
In what one promise are all these promises summed up?

Questions & Answers are from the book Bible Readings for the Home Circle