. . . To God's Elect . . 2 who have been chosen according to the foreknowledge of God the Father, through the sanctifying work of the Spirit, to be obedient to Jesus Christ and sprinkled with his blood:
Grace and peace be yours in abundance.
Here is the same verse in Amplified version:
2 according to the foreknowledge of God the Father by the sanctifying work of the Spirit to be obedient to Jesus Christ and to be sprinkled with His blood: May grace and peace [that special sense of spiritual well-being] be yours in increasing abundance [as you walk closely with God].
This verse lit up in my mind like a light bulb--here in one verse is the description of how each member of the Trinity acts in redeeming man-kind!
We see God the Father--He has the foreknowledge (since He is not limited by time at all, let's say the PRESENT knowledge) of all mankind's responses to Himself. He knows how each man will view the creation He has made, His right to own and rule that creation, and how they will misuse it.

We see the work of the Spirit--The nature of God nudging every heart to know and respond to God's truth (obedience). The Spirit that grows the nature of Christ within our souls. The Spirit that makes God come alive in our hearts, illuminates the inklings of understanding we have, and gives us "pushes" in the right direction.

We see the work of Jesus--the act of sacrifice, the blood that gives us the right to approach God. When Jesus died, it was not a show, it was a transaction for the human race, open for all to accept. He being perfect and taking on an undeserving death opened the door for us to accept God's nature inside us and be able to stand in His absolutely perfect presence.

Peter ends with " Grace and Peace be yours in abundance" Those words translate "divine influence upon the heart, and its reflection in the life; God's power in our life. Peace translates: prosperity:--one, peace, quietness, rest, + set at one again. It's more than quietness of mind--it's wholeness in every way.
There, one verse, three parts of the Godhead, I think it's cool.