Seeing you have purified your souls in your obedience to the truth through the Spirit in sincere brotherly affection, love one another from the heart fervently:

 Here again we have a rich passage. The wonder of the salvation which was to come to men in Christ was such that the prophets searched and enquired about it; and even the angels were eager to catch a glimpse of it. Few passages have more to tell us about how the prophets wrote and about how they were inspired. 