Bright flash of light marks incredible moment life begins when sperm meets egg
Gen 1:3 And God said, Let there be light: and there was light.
Joh 1:4 In him was life; and the life was the light of men.
Joh 1:9 That was the true Light, which lighteth every man that cometh into the world.
Luk 1:35And the angel answered and said unto her, The Holy Ghost shall come upon thee, and the power of the Highest shall overshadow thee: therefore also that holy thing which shall be born of thee shall be called the Son of God. 36And, behold, thy cousin Elisabeth, she hath also conceived a son in her old age: and this is the sixth month with her, who was called barren. 37For with God nothing shall be impossible. 38And Mary said, Behold the handmaid of the Lord; be it unto me according to thy word. And the angel departed from her.
39And Mary arose in those days, and went into the hill country with haste, into a city of Juda; 40And entered into the house of Zacharias, and saluted Elisabeth. 41And it came to pass, that, when Elisabeth heard the salutation of Mary, the babe leaped in her womb; and Elisabeth was filled with the Holy Ghost: 42And she spake out with a loud voice, and said, Blessed art thou among women, and blessed is the fruit of thy womb. 43And whence is this to me, that the mother of my Lord should come to me? 44For, lo, as soon as the voice of thy salutation sounded in mine ears, the babe leaped in my womb for joy. 45And blessed is she that believed: for there shall be a performance of those things which were told her from the Lord.
The day of conception was when the Holy Spirit, i.e. the Light, Christ, began to dwell with men. The date being Dec 25, known from the fact that Zacharias was a Levitical priest of the course of Abia. The birth being 9 months later on September 29.
Isaiah 49:1 Listen, O isles, unto me; and hearken, ye people, from far; The LORD hath called me from the womb; from the bowels of my mother hath he made mention of my name.
Romans 9:6Not as though the word of God hath taken none effect. For they are not all Israel, which are of Israel: 7Neither, because they are the seed of Abraham, are they all children: but, In Isaac shall thy seed be called. 8That is, They which are the children of the flesh, these are not the children of God: but the children of the promise are counted for the seed. 9For this is the word of promise, At this time will I come, and Sara shall have a son. 10And not only this; but when Rebecca also had conceived by one, even by our father Isaac; 11(For the children being not yet born, neither having done any good or evil, that the purpose of God according to election might stand, not of works, but of him that calleth;) 12It was said unto her, The elder shall serve the younger. 13As it is written, Jacob have I loved, but Esau have I hated.
14What shall we say then? Is there unrighteousness with God? God forbid. 15For he saith to Moses, I will have mercy on whom I will have mercy, and I will have compassion on whom I will have compassion. 16So then it is not of him that willeth, nor of him that runneth, but of God that sheweth mercy.
Gen 25:34Then Jacob gave Esau bread and pottage of lentiles; and he did eat and drink, and rose up, and went his way: thus Esau despised his birthright.
Genesis 25:23 And the LORD said unto her, Two nations are in thy womb, and two manner of people shall be separated from thy bowels; and the one people shall be stronger than the other people; and the elder shall serve the younger.