Anonymous asked: If Jesus is God and you believe in the Holy Trinity, then God Himself died on the cross, right? How can God Himself die for our sins to pay our ransom to Himself? Doesn't make sense.
Today in liturgical churches we celebrated the Festival of the Holy Trinity, so this is the perfect time to answer this question!
In the Athanasian creed we confess that all three persons of the Trinity are God: The Father is God, the Son is God, and the Spirit is God. At the same time, there are not three gods, but one God. And yet each person is distinct: The Father is not the Son or the Spirit, the Son is not the Spirit or the Father, and the Spirit is not the Father or the Son.
As each member of the Trinity is distinct and personal, so each distinct personality had a different part in our Salvation. God the Father was not on the Cross suffering for our sins, though He is just as involved in our salvation as the Son and the Spirit are. The Spirit was not born of the Virgin Mary, and yet He still is saving us.
You’re right that if God died for our sins to pay a ransom to Himself (though He wasn’t paying a ransom to Himself, per se*), it wouldn’t make sense. This is because God, in the phrasing of your question, is only one person. But because God is three persons, then the Father can crush the Son. Does this make sense? Not perfectly, of course. The Trinity is a divine mystery. But the Holy Spirit gives us this confession of Jesus as Lord, revealing this three-in-one God in His Holy-Spirited-to-us Word, and so we confess this truth without professing to fully understand it.
The sermon this morning was from Numbers 6:22-27, and it’s a beautiful passage. The Trinity has been working since before this Aaronic Benediction was given: The Father blesses and keeps us; the Son shows us how His face shines upon us, and is gracious and grace to us; the Spirit comforts us with the peace that God has lifted His countenance upon us and blessed us with all things in Christ Jesus.
* Galatians 4 may be helpful in understanding what Christ was redeeming us from.