Unto you first God, having raised up his Son Jesus, sent him to bless you, in turning away every one of you from his iniquities.
Read Chapter 3
Hilary of Poitiers
God raised up his Son and sent him first to you:
The Lord had come to his own and among his own, awaiting the first fruits of faith from those people he took his roots from. The others subsequently had to be saved by the preaching of the apostles.