When Pope Pius IX declared the dogma of the Immaculate Conception in the apostolic constitution Ineffabilis Deus, he spoke of the Father’s eternal decision, inseparable from the decision that the Word would become flesh, saying, From the very beginning, and before time began, the eternal Father chose and prepared for his only-begotten Son a Mother in whom the Son of God would become incarnate and from whom, in the blessed fullness of time, he would be born into this world. Above all creatures did God so love her that truly in her was the Father well-pleased with singular delight. Therefore, far above all the angels and all the saints so wondrously did God endow her with the abundance of all heavenly gifts poured from the treasury of his divinity that this mother, ever absolutely free of all stain of sin, all fair and perfect, would possess that fullness of holy innocence and sanctity than which, under God, one cannot even imagine anything greater, and which, outside of God, no mind can succeed in comprehending fully. Yes, in the Jewish system of arranged marriages and rabbinical law they were betrothed, and while the woman did not move into the home of her husband for a time, any child that was conceived was his. This was the basis for Joseph’s doubts. The angel showed him through the situation. Luke 1:18b-21 When his mother Mary had been betrothed to Joseph, before they came together she was found to be with child of the Holy Spirit; and her husband Joseph, being a just man and unwilling to put her to shame, resolved to send her away quietly. But as he considered this, behold, an angel of the Lord appeared to him in a dream, saying, “Joseph, son of David, do not fear to take Mary your wife, for that which is conceived in her is of the Holy Spirit; she will bear a son, and you shall call his name Jesus, for he will save his people from their sins.