Of which salvation the prophets have enquired and searched diligently, who prophesied of the grace that should come unto you:

Concerning this salvation, the prophets who foretold the grace to come to you searched and investigated carefully,

Searching what, or what manner of time the Spirit of Christ which was in them did signify, when it testified beforehand the sufferings of Christ, and the glory that should follow.

trying to determine the time and setting to which the Spirit of Christ in them was pointing when He predicted the sufferings of Christ and the glories to follow.

Unto whom it was revealed, that not unto themselves, but unto us they did minister the things, which are now reported unto you by them that have preached the gospel unto you with the Holy Ghost sent down from heaven; which things the angels desire to look into.

It was revealed to them that they were not serving themselves, but you, when they foretold the things now announced by those who preached the gospel to you by the Holy Spirit sent from heaven. Even angels long to look into these things.