One of the teachers of the law came and heard them debating. Noticing that Jesus had given them a good answer, he asked him, “Of all the commandments, which is the most important?” “The most important one,” answered Jesus, “is this: ‘Hear, O Israel: The Lord our God, the Lord is one. Love the Lord your God with all your heart and with all your soul and with all your mind and with all your strength.’ The second is this: ‘Love your neighbor as yourself.’ There is no commandment greater than these.” “Well said, teacher,” the man replied. “You are right in saying that God is one and there is no other but him. To love him with all your heart, with all your understanding and with all your strength, and to love your neighbor as yourself is more important than all burnt offerings and sacrifices.” When Jesus saw that he had answered wisely, he said to him, “You are not far from the kingdom of God.” And from then on no one dared ask him any more questions.The man who had asked him the question had a unitarian concept of God. Notice that Jesus does not say to the man "You have entered the kingdom of God." Rather, He says "You are not far from the kingdom of God." In other words, he still had not yet reached it. But what does Jesus go on to say in verses 35-37?
While Jesus was teaching in the temple courts, he asked, “Why do the teachers of the law say that the Messiah is the son of David? David himself, speaking by the Holy Spirit, declared: “‘The Lord said to my Lord: “Sit at my right hand until I put your enemies under your feet.”’ David himself calls him ‘Lord.’ How then can he be his son?” The large crowd listened to him with delight.Here, Jesus identifies the Lord of Psalm 110 seated at Yahweh's right hand as the Messiah. Since Muslims and Christians both accept Jesus to be the Jewish Messiah, we can agree that Jesus thus asserts Himself to be the Lord of Psalm 110. The Hebrew word used for "my Lord" in Psalm 110 is Adoni (the possessive form of Adon). Now, this is not necessarily a title of deity, as it can be used of individuals who are not God. However, in verse 5-7 of Psalm 110, we read,
The Lord is at your right hand; he will crush kings on the day of his wrath. He will judge the nations, heaping up the dead and crushing the rulers of the whole earth. He will drink from a brook along the way, and so he will lift his head high.In the Hebrew, verse 5 does indeed identify the one seated at Yahweh's right hand as none other than Adonai, a word used only ever of deity. Thus, Psalm 110 implies a plurality of divine persons within the Godhead. One possible reply to this is that Psalm 110:5 is merely the reversal of Psalm 110:1. Just as David's Lord sits at the right hand of Yahweh, so also Yahweh is at the right hand of David's Lord. For instance, in Psalm 109:31, Yahweh is at the right hand of the needy one, and in Psalm 16:8, Yahweh is at the right hand of the Psalmist David. The problem with this argument is that if one continues reading Psalm 110, it is clear that the "He's" of verses 5-7 all refer back to Adonai, and in verse 7 this individual is said to drink from a brook -- a human function. Thus, the individual seated at Yahweh's right hand in Psalm 110 is a divine-human person.
Another response that might be leveled against this is that the masoretic vowel pointing which distinguishes between the terms Adoni and Adonai in fact developed centuries later and so we cannot have certainty about which meaning is intended by the Psalmist. How, then, can we tighten this argument further?
In Psalm 16:2, we read,
I say to the Lord, “You are my Lord; apart from you I have no good thing.”Moreover, in Psalm 35:23, we read,
Awake, and rise to my defense! Contend for me, my God and my Lord.Clearly, David's Lord in those texts is God Himself. Yet without the later Masoretic vowel pointing, these texts are indistinguishable from Psalm 110:1. If one accepts the Masoretic vowel pointing in regards to Psalm 110:1, then one must be consistent and accept it in regards to Psalm 110:5, in which the one seated at Yahweh's right hand is identified as Adonai.
In our text in Mark 12, Jesus makes the argument (verse 37) that "David himself calls him ‘Lord.’ How then can he be his son?” The point Jesus is making is that none of David's descendants could be greater than David. This, then, cannot be referring to David's son. The question is thus raised as to what sort of Lord this could possibly be referring to.
But we can go even further than that. David's Lord also cannot be any human king, since in Psalm 2:10-12 all kings are to be subject to David, and Psalm 89:26-27 tells us that,
I will appoint him [David] to be my firstborn, the most exalted of the kings of the earth.It also cannot be a mere angelic creature since angels serve God's elect and are servants themselves (see Hebrews 1:7, 14 and Revelation 19:10 and 22:8-9). Who, then, is left? God.
Thus, Psalm 110:1 is a powerful proof-text for two divine Persons.
Moreover, David's Lord is said to be sitting at God's right hand. Now, where is God's throne? Psalm 2:4 tells us that,
The One enthroned in heaven laughs; the Lord scoffs at them.Psalm 11:4 tells us that,
The Lord is in his holy temple; the Lord is on his heavenly throne. He observes everyone on earth; his eyes examine them.Psalm 103:19 tells us that,
The Lord has established his throne in heaven, and his kingdom rules over all.Thus, if Yahweh is enthroned in heaven, then David's Lord must be seated in Heaven as well.
This presents yet further difficulties for Islam. For instance, Surah 3:80 in the Qur'an says,
Nor could he order you to take the angels and prophets as lords. Would he order you to disbelief after you had been Muslims?Surah 25:2, furthermore, says,
He to whom belongs the dominion of the heavens and the earth and who has not taken a son and has not had a partner in dominion and has created each thing and determined it with [precise] determination.Thus, how could David and Jesus be Muslims if David worshiped Messiah as his Lord and speaks of him seated with God in heaven?
Jesus thus re-interprets the Shema in Mark 12:29 in light of Psalm 110:1 in 12:35-37 so as to include Himself as the Messiah within the Shema as Israel's one Lord. This also provides a basis for Paul's reformulation of the Shema in 1 Corinthians 8;6, when he writes,
...yet for us there is but one God, the Father, from whom all things came and for whom we live; and there is but one Lord, Jesus Christ, through whom all things came and through whom we live.In conclusion, then, it is no coincidence that Jesus immediately follows his quotation of the Shema up with Psalm 110:1 to affirm that the one Lord is multi-Personal. Thus, a read of the context surrounding Jesus' allusion to the Shema reveals his concept of God as multipersonal.