So if we asked a Muslim, a Jew and a Christian how many Gods they believe in they would all answer "One God" but a Christian could continue on and give a more correct answer by saying that this One God is Three Persons whom we call: Father, Son and Holy Spirit.

Taking a similar example from Nature: if many people were asked what colour the Sun is they would reply that the Sun is an intense white (and instantly blinding so please do not attempt to look at it) but if a school Science student was asked they could give a more correct answer by saying that the Sun seems to be white because it is emmitting equal amounts of Red, Green and Blue light at the same time and those three colours combine together to give us the impression that the Sun is just that One White intense colour.[2] So the Trinity has created our Sun similar to Itself. Read more. . .

Adam and Eve, Jesus and Mary

Adam and Eve were two sinless virgins before the Fall but they did not remain so and Jesus and Mary were two sinless virgins before and forever after the Redemption. Mary is the New Eve. Jesus is the New Adam and He is also God's Fruit (Knowledge of God's Goodness.). He was nailed to the Tree: Cross. Adam was tempted to take down God's fruit from the tree and Jesus the New Adam was tempted to take down God's Fruit (Himself) from the Tree? "Come down from the Cross and we will believe in him" Matthew 27:42. Mary the New Eve was more tempted to take down God's Fruit (Jesus) from the Treee than Eve was. God's Fruit was Stolen from Mary and nailed to the Tree.
An angel spoke to the sinless virgin and the agenda of his conversation was Fruit on the Tree. Who was the Woman? Eve and also 2000 years ago Mary.
God planned that there would be a New Eve right from the beginning so that just as by the first Eve's intercession to Adam satan succeeded so by the New Eve's intercession to Jesus satan would be daily defeated. Eve interceded to obtain sin, Mary intercedes for us to obtain graces to conquer sin. The Rosary meditations explore the many times where Jesus showed that He Is the New Adam and that Mary is the New Eve. Read more. . .

Mary ever Virgin

"Before they came to live together she was found to be with Child" Matthew 1: 18
So Jesus was conceived before Mary and Joseph lived together or outside of their marriage. So that means that Jesus was illegitimate as regards Mary's marriage to Joseph unless Mary was already espoused to God when God conceived His Son in her. Jesus was born outside of Wedlock unless Mary had already taken a vow of Chastity (Virginity in this world) to God. So Mary had to be espoused to God by a vow of Virginity or Chastity and that is why she asked in Luke 1: 34 And Mary said to the angel: How shall this be done, because I know not man?. God did not treat Mary as a surrogate Mother for His Son. In scripture we see how important the marriage bond was to God. So there is no way that God would conceive His Son outside of wedlock after He had commanded humans to make vows of Chastity in marriage before conceiving children. God is not a hypocrite and does not break His own rules. So Mary had to make a vow of Chastity to God for life before she conceived His Son. God was the Father of her Son so she had to be espoused to Him. Mary's marriage to Joseph was secondary to that and we can only presume that Joseph was the ideal human spouse for Mary and must have taken a vow of virginity or chastity to God as well or at least have accepted Mary's vow of Virginity.