No they are not equally divine, if by equally divine you mean that they are both the Almighty. The word echad in the Shema strictly means one, not two or more. Echad is a numerical adjective that is sometimes found modifying a collective noun. The sense of plurality is in the compound noun and not in the word echad “one” The idea that the God of the Hebrew Bible, who is a single Individual, revealed in 2 or 3 is contradicted in the NT. Jesus deliberately makes any change in the nature of God impossible. He insisted on the unitarian Shema of his Jewish heritage. Mark 12:28-34, John 17:3, John 5:44. Jesus is never called "the only God" nor "the Almighty" nor "the Sovereign Lord".
The Sovereign Lord is God, the Father, Psalm 73:28, Acts 4:24 while Jesus is adoni (my lord} lord Christ. Psalm 110:1 says, Jehovah saith unto my Lord/adoni, Sit thou at my right hand, Until I make thine enemies thy footstool.
Luke 1:43 says, And whence is this to me, that the mother of my Lord should come unto me?
Luke 2:11 says, for there is born to you this day in the city of David a Saviour, who is Christ the Lord. God made Jesus both Lord and Christ. Acts 2:35-36 says, For David ascended not into the heavens: but he saith himself, The Lord said unto my Lord/adoni, Sit thou on my right hand, 35 Till I make thine enemies the footstool of thy feet. 36 Let all the house of Israel therefore know assuredly, that God hath made him both Lord and Christ, this Jesus whom ye crucified.
I Corinthians 8:6 is against polytheism, and Scripture is clear that “there is no God but one” (1 Cor. 8:4). Then the text continues with the statements that although there may be many gods and lords, for Christians there is but one God, the Father, and one Lord, Jesus Christ. If the binitarianism is correct, then this text can only be construed as confusing. Here was the perfect opportunity to say, “for us there is only one God made up of the Father and the son, or something similar, but, instead, Scripture tells us that only the Father is God.
The greek word “Eis [one] 1 Corinthians 8:6 means ‘single, unique, only, unitary
The Aramaic in plain English of Mark 12:29 says
Yeshua said to him, “The first of all the commandments: 'Hear Israel, THE LORD JEHOVAH your God, THE LORD JEHOVAH, he is One
There is no reference to the word echad “one” as to a plurality of any kind. It is used of “one” in number, “the first” in a series, “one” in the sense of “the same,” and “one” in the sense of “each” or “a certain one.” A study of its uses in the Old Testament will reveal its simple meaning and the truth it conveys. It is translated “first” in Genesis 1:5, when God made light on the “first” day. The whole earth spoke “one” language before Babel (Gen. 11:1). Hagar cast her child under “one” of the bushes (Gen. 21:15). In Pharaoh’s dream, there were seven ears of grain on “one” stalk (Gen. 41:5). In the plague on Egypt’s livestock, not “one” cow died in Israel (Ex. 9:6). Exodus 12:49 says that Israel shall have “one” law for the citizen and the foreigner.
Accorgding to Jesus Christ “Hear, O Israel! The Lord our(Jesus included) God is Lord alone!” was a part of the greatest commandment in the Law.
The Pharisee in Mark 12:28-34, who was also a “scribe,” asked Jesus what was the greatest commandment in the Law.
How do we know that when Jesus quoted the Shema that he quoted it with the same meaning it had in the Old Testament; that God “alone” was God? We know it by reading the whole account in Mark.12:28-34.
First, the Pharisee’s question: “What commandment is the first of all?” Jesus answered the question by quoting both Deuteronomy 6:4 and 5. The Pharisee’s response showed that both he and Jesus have the same conclusion about the Shema.
The Pharisee admitted that Jesus’ answer was “well said,” and then he connected the Shema with Deuteronomy 4:35, that YHWH is God and there is no other God but him. The Pharisee and Jesus did not talked about a “compound unity” in God, but rather the Pharisee spoke to Jesus the simple message of the Old Testament contained in the Shema: YHWH alone is God and there is no other God, That is the God of Jesus Christ, John 17:3 John 20:17.