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.

To whom are those who suffer exhorted to commit their souls?
How necessary is faith?
What will be the fate of the one who curseth his father or his mother?
What kind of mind is not subject to the law of God?
How does David speak of Christ's coming?
Concerning what did Christ tell us not to marvel?
How does God regard the afflicted?

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