God is the English name given to a singular being in theistic and the deistic Jewish faith (and other belief systems) who is a the sole deity in monotheism.
God is most often conceived of as the supernatural creator and overseer of the universe. Theologians have ascribed a variety of attributes to the many different conceptions of God. The most common among these include omniscience (infinite knowledge), omnipotence (unlimited power), omnipresence (present everywhere), omnibenevolence (perfect goodness), divine simplicity, and eternal and necessary existence.
God has also been conceived as being incorporeal (immaterial), a personal being, the source of all moral obligation, and the “greatest conceivable existent”. These attributes were all supported to varying degrees by the early Jewish, Christian and Muslim theologian philosophers, including Maimonides, Augustine of Hippo, and Al-Ghazali, respectively. Many notable medieval philosophers and modern philosophers developed arguments for the existence of God. Many notable philosophers and intellectuals have, in contrast, developed arguments against the existence of God.
But who exactly is God?
The commandment found in the Bible most known as Shema Yisrael (or Sh’ma Yisrael or just Shema) (Hebrew: שְׁמַע יִשְׂרָאֵל; “Hear, [O] Israel”) Deuteronomy 6:4-9 was emphasized by Yeshua (Jesus), on whom be peace, when a teacher of the Law or Torah of Moses asked him: “‘Of all the commandments, which is the most important?’ ‘The most important one,’ answered Yeshua(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.’” (Mark 12:28-30).
Notice that Yeshua(Jesus) was quoting the first commandment from the book of Deuteronomy 6:4-5. Jesus confirmed not only that this commandment is still valid, but also that it is the most important of all the commandments. If Jesus thought that he himself is God, why did not he say so? Instead, he stressed that God is one. The man who questioned Jesus understood this, and what the man says next makes it clear that God is not Jesus, for he said to Jesus: “‘Well said, teacher,’ the man replied. ‘You are right in saying that God is one and there is no other but him.’” (Mark 12:32).
Now if Yeshua (Jesus) was God, he would have told the man so. Instead, he let the man refer to God as someone other than Jesus, and he even saw that the man had spoken wisely: “When Jesus saw that he had answered wisely, he said to him, ‘You are not far from the kingdom of God.’” (Mark 12:34). If Jesus knew that God is a trinity, why did not he say so? Why did not he say that God is one in three, or three in one? Instead, he declared that God is one. True imitators of Jesus will imitate him also in this declaration of God’s oneness. They will not add the word three where Jesus never said it.
Does salvation depend on this commandment? Yes, says the Bible! Yeshua(Jesus) made this clear when another man approached Yeshua(Jesus )to learn from him (see Mark 10:17-29). The man fell on his knees and said to Yeshua(Jesus): “Good teacher, what must I do to inherit eternal life?” Yeshua (Jesus) replied: “Why do you call me good? No one is good — except God alone.” (Mark 10:17-18).
Most important of all the commandments, according to Yeshua(Jesus), is to know God as the only God. The One, whom Yeshua(Jesus) was praying to, is the only true God, and they must know that Jesus was sent by the true God.
Yeshua(Jesus) himself emphasized that he does not speak on his own authority (John 14:10) and he does nothing on his own authority, but he speaks only what the Father has taught him (John 8:28).
By so saying, Yeshua (Jesus) made a clear distinction between himself and God.