What specific instance is mentioned by Peter?

Answer

'Men and brethren, this scripture must needs have been fulfilled, which the Holy Ghost by the mouth of
David spoke before concerning Judas, which was guide to them that took Jesus!' Acts 1: 16.

What did he tell them to do?
What promise is made to the willing and obedient?
Does the New Testament teach the same duty?
How did Christ speak of the gathering of the Gentiles?
But when, according to the prophecy, was Elijah to be sent?
How should we sympathize with others in their sorrows?
To whom has God given the earth?

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