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 gave special force to the oath of an angel?
How has God revealed to us the hidden things of the kingdom?
How was Esther brought up?
What reason is given in the fourth commandment for keeping the Sabbath day holy?
To whom was the book dedicated?
6. What would have been the result to the dead had not Christ procured their release from the grave?
Why did the unjust judge answer the widow's prayer?

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