Q. Can you please elaborate the terminology of the Father, Son relationship as indicated in Hebrews 1 verse 5. “You are my son; today I have become your Father.” As I understand it the Trinity always existed.
A. The Bible tells us the trinity existed before time began. In Micah 5:2 where the birthplace of the Messiah was foretold, the phrase we read read about Him that says “whose origins are from of old, from ancient times” basically means “whose family descent is from before time and is perpetual.” And 1 Peter 1:20 tells us Jesus was chosen to be our redeemer before the creation of the world.
Hebrews 1:5 is a quote from Psalm 2:7, and records a conversation between the Father and the Son that took place at some undisclosed point in the distant past. David was revealing it, but did not say when it took place. It tells us that the second person in the trinity, although an eternally existing being, accepted His role as the Son of God and all that entails, at a specific time. As Peter indicated, this happened before the creation of the world, and has become known by scholars as the everlasting covenant.
Put together these verses confirm that God’s plan for the redemption of mankind was in place well before the first man was created.