Is there any quote or verse in Vedas saying that god comes to world in human forms?

[Shri Anil asked: A muslim devotee Abdul Wahab asked following question:
Is there any quote or verse in Vedas saying that god comes to world in human forms or entering into a most deserving devotees and he is also called as son of god? If is it so, then how we can proclaim these devotees as Gods? Please explain me with verse/ Quotes from vedas. Also in Bible and Quran that in nowhere it is said that Jesus and Muhammad are Gods. At any place in Bible Jesus himself never said “I am the God, Worship me” but He said "My Father is Greater than I” John 14:28 .]

Swami replied: Revered Mohammad Himself is God in human form, who came after Jesus. Muslims respect Jesus also as the prophet of God. It is true that Mohammad objected the concept of human incarnation of God. The reason is that the concept of human incarnation was not accepted by the people of the same region in which Christianity and Islam were generated. Due to jealousy and ego, people could not tolerate the monism of a specific devotee and God and hence crucified Jesus. Mohammad wanted that this danger should not happen to another human incarnation and hence negated this concept in view of the psychology of people in that region. Jesus told that He and His father are one and the same. Jesus actually said that He is in God and God is in Him. This is not possible unless both are one and the same. If He is in God, God must be bigger than Him. If God is in Him, He must be bigger than God. If God pervades all over Jesus like current in the wire, this is possible. There is no wire without current and there is no current without the wire. This means that both are one and the same for all practical purposes. Jesus told that He is the truth. God alone is the absolute truth and hence this means that He is God. He also told that He and His father are different as per the statement that says that one can reach His father through Him only. Both monism and dualism were told by Him, which are simultaneously correct viewed in two angles. The electrified wire is current because the shock, the property of current, is exhibited by the electrified wire. At the same time, it is also correct to say that the current as a flow of electrons and the wire as a chain of metallic crystals are different from each other. The Veda says that God after entering the human form becomes the human form (Tyat) and also remains as His own form (Sat). The Veda says that this specific human being is God (Ayamaatmaa Brahma). The Veda says that the five items (body, life, mind, intelligence and bliss) of human being are God and such statement may result to think that every human being is God. Hence, a specific human being was said to be God. If every human being is God, there is no need of spiritual effort and scripture. Further, the Veda says ‘I am God’ (statement of human incarnation), ‘You are God’ (statement of a devotee addressing the human incarnation) and ‘exceptional divine knowledge is God’ (the possessor of the exceptional divine knowledge is God and the exceptional divine knowledge is the specific identification). In the Veda, it is said in several places, that a specific human being or individual soul (Atma) is God. The word Atma stands for both the body and soul as per the dictionary of Sanskrit language. The Gita, a clear presentation of God says that God enters the human body (Manusheem...). Here, the dualism is correct because both God and human form are different items like current and wire. The human form is not modified in to God as said in the Gita (Avyaktam...). The electrons (current) is not modified into crystals (wire) and hence dualism is always true. But, the electrified wire giving shock everywhere is current for all practical purposes and hence monism is also true simultaneously in all the times. Both the views are simultaneously correct. The best example is the electron itself which is a particle (matter) and wave (energy) simultaneously and this called as the dualism of electron. You cannot take one view only and argue that it is only particle or that it is only wave. Hence, the concept of human incarnation of the Gita and Jesus (monism) and also the negation of this concept by Mohammad (dualism) are simultaneously true. The devotee has no option to worship the original unimaginable God, who cannot be even imagined. The devotee should worship the human incarnation as God (Monism). The human being of the human incarnation should not feel that it is God on hearing the praise from devotees and should think that God exists in Him (dualism). Thus, both the concepts are simultaneously true in view of the devotee worshipping the human incarnation and the devotee possessed by God. Sometimes, the human incarnation says that It is God. Here, the God in the human incarnation is speaking. The voice and throat belong to the human being only. But, the speakers are different. Hence, we find both types of statements from the mouth of the human incarnation and we should analyze as per the context to decide the speaker. This is two-in-one system and is most complicated and confusing. Only by the grace of God, a devotee can recognize the human incarnation overcoming the ego and jealousy due to repulsion between himself (human body) and the human incarnation (human body).