10 Concerning this salvation, the prophets, who prophesied of the grace that would come to you, made careful searches and inquiries, 

11 inquiring to know what time or what kind of time the Spirit of Christ within them was indicating as He was predicting the sufferings of Christ and the glories to follow. 

12 It was revealed to them that they were not serving themselves, but you, in these things which now have been declared to you through those who proclaimed the gospel to you by the Holy Spirit sent from heaven—things into which angels long to look.

Quotes:

“What was predicted in the past was intended for Peter’s readers.  Their salvation is described as ‘grace’ here, and the point is that such grace ‘was to come to you.’  God’s favor and power were ‘meant for you’ and were not experienced in the same way by the Old Testament prophets.”  (Thomas R. Schreiner) 

 

“Neither Christ nor His people receive the crown of glory without the crown of thorns.”  (Dr. Peter David)

 

“Their [the prophets] ministry was not ultimately directed to themselves or their own generation but to Petrine readers and all those who live on the other side of the death and resurrection of Christ.  In other words, the Old Testament prophecies do not only apply to Peter’s readers but were intended for them.”  (Thomas R. Schreiner) 

 

“Though the world may think such Christians insignificant and worthy of pity or scorn, angels—who see ultimate reality from God’s perspective—find them to be objects of intense interest, for they know that these struggling believers are actually the recipients of God’s greatest blessings and honoured participants in a great drama at the focal point of universal history.  We too may rightly think of our Christian lives as no less privileged and no less interesting to holy angels than the lives of Peter’s readers.”  (Dr. Wayne A. Grudem)