Arthur.k:
Yes,
But other people believe the Messiah is the Son of God, who is separate from Yahweh. Therefore this doesn’t work. I want to find a way to explain this to them. I tried explaining to them with example in the Bible, but the question that I could not answer is.
If the Father and Jesus in heaven make up one Yahweh, than why when they’re both in Heaven is Yahweh speaking to Jesus?
Jesus used this Psalm to refute the Pharisees who insisted that the son of David, the Messiah (the anointed one) would be merely a human messiah.
The passage is in Matt 22:40-5 …
Now while the Pharisees were gathered together, Jesus asked them this question: “What do you think of the Messiah? Whose son is he?” They said to him, “The son of David.” He said to them, “How is it then that David by the Spirit calls him Lord, saying,
‘The LORD said to my Lord,
“Sit at my right hand,
until I put your enemies under your feet”’?
If David thus calls him Lord, how can he be his son?” No one was able to give him an answer, nor from that day did anyone dare to ask him any more questions.
Clearly, David, the author of the Psalm is the one referring to “
my Lord” when he says ‘The Lord said to
my Lord.’
It isn’t the Father calling the messiah ‘my Lord,’ it is David doing so in the Psalm.
What Jesus is getting at is that David wouldn’t call his descendent ‘my Lord’ if that descendent were purely a human being, he would have to be something more than merely human. Yet, the Messiah would be the promised son of David, so he would have to be a human being. How could he be
both human and divine? is the question Jesus is posing to the Pharisees.
When you ask …
If the Father and Jesus in heaven make up one Yahweh, than why when they’re both in Heaven is Yahweh speaking to Jesus?
… the logical answer is that the Father was speaking to the Son in his human capacity as the son of David, which is why
David “…by the Spirit
calls him Lord, saying, ‘The LORD said to my Lord.’”
The Father isn’t calling the Son, ‘my Lord,’ that is David saying that. The Father is speaking to the Son, though, but he isn’t calling him 'my Lord." The Father is saying to the Son, Jesus, that he is to sit “…at my right hand.”
That is a Jewish figure of speech for sharing equally in divine power.
The proper context for this would be that Jesus by becoming man, i.e., son of David or son of man, emptied himself of that power in order to become a human being, but after his Ascension he was restored to the “right hand of power,” his proper place as the Second Person of the Trinity.