Is Each man an incarnation?

One preacher declared that each human is an incarnation out of unwarranted enthusiasm. Sadly, he is not speaking the biblical truth, in fact, the opposite.
God becoming man: The truth of incarnation happened only once in history and will never be repeated. God became flesh or human in Jesus. Apostle John explains well: “And the Word became flesh and dwelt among us, and we have seen his glory, glory as of the only Son from the Father, full of grace and truth.” (John 1:14) The word flesh means to become human.
Crucifixion and salvation: God sent His Son the Lord Jesus Christ into the world, and he became human in Jesus. (John 3:16) The purpose was to save sinners, not to destroy them. The consequence of sin is death; to give eternal life in His presence for fallen humans, the Son should die as a substitute. The Holiness of God to punish sin, the love of God to sacrifice His Son, and the grace of God to get free forgiveness from sin were displayed in the crucifixion in the Cross of Calvary. He died, was buried, rose again on the third day, and ascended to heaven.
Image of God: God created Adam, the male, and Eve, the female, in His own image. (Genesis 1:27) It means that humans reflect the nature of God such as morality, intellectual ability, creativity, communication ability, etc. It also implies that Adam and Eve, their descendants, are representatives of God, and given authority to govern the earth.
Wrong idea: However, in the world, there are religious philosophies that teach that the essence of God and humans are one and the same. Hence, their spirituality is to find, discover, or realize God within themselves. Such a search is futile, as a human is not God, a creator, but just a created being. Because of sin, he has fallen and lost the glory of God. Only the Gospel light that shines in the heart could bring redemption. (II Corinthians 4:6)
Have I repented and received Christ or engaged in a futile search?