Candidly I do not know exact it point Mary. Mary is blessed and Jesus is son of Mary. We say God bless but not God is blessed. So God blessed Mary. Perhaps that could be used for God but I cannot know exactly.
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Jesus Christ was Son of Blessed One(Mary)! That term is repeated in Qur’an too.
There is much that I would like to answer in these post and will but right now I want to address only this:
So you admit you do not know how the high priest was pointing to Mary?
Again the high priest was questioning him, and saying to him, “Are You the Christ, the Son of the Blessed One?” And Jesus said,
“I Am
It defies logic that they would call Mary blessed when they hated her Son and was putting Him on trial in order to kill Him. It is illogical to ask if Jesus was Mary’s son. It is NOT Mary that they are asking Jesus if He is the Son of but the Most High, the Blessed One, God. It is why immediately they terminate the trial as from His own mouth they have heard Him blaspheme by saying He is God.
We say God bless but not God is blessed.
Genesis 14 20: and blessed be God Most High, who has delivered your enemies into your hand!"
Exodus 18 10: And Jethro said, "Blessed be the LORD, who has delivered you out of the hand of the Egyptians and out of the hand of Pharaoh.
Ruth 4 14: Then the women said to Na’omi, "Blessed be the LORD, who has not left you this day without next of kin; and may his name be renowned in Israel!
1 Samuel 25 32: And David said to Ab’igail, “Blessed be the LORD, the God of Israel, who sent you this day to meet me!
1 Samuel 25 39: When David heard that Nabal was dead, he said, “Blessed be the LORD who has avenged the insult I received at the hand of Nabal, and has kept back his servant from evil; the LORD has returned the evil-doing of Nabal upon his own head.” Then David sent and wooed Ab’igail, to make her his wife.
2 Samuel 18 28: Then Ahi’ma-az cried out to the king, “All is well.” And he bowed before the king with his face to the earth, and said, “Blessed be the LORD your God, who has delivered up the men who raised their hand against my lord the king.”
1 Kings 1 48: And the king also said, `Blessed be the LORD, the God of Israel, who has granted one of my offspring to sit on my throne this day, my own eyes seeing it.’”
1 Chronicles 29 10: Therefore David blessed the LORD in the presence of all the assembly; and David said: "Blessed art thou, O LORD, the God of Israel our father, for ever and ever.
Tobit 8 5: And Tobias began to pray, "Blessed art thou, O God of our fathers, and blessed be thy holy and glorious name for ever. Let the heavens and all thy creatures bless thee.
Psalms 134 21 Blessed be the Lord out of Sion, who dwelleth in Jerusalem.
Daniel 3 52 "Blessed are you, O Lord, the God of our fathers, praiseworthy and exalted above all forever; And blessed is your holy and glorious name, praiseworthy and exalted above all for all ages.
Daniel 3 54 Blessed are you on the throne of your kingdom, praiseworthy and exalted above all forever.
Daniel 3 55 Blessed are you who look into the depths from your throne upon the cherubim, praiseworthy and exalted above all forever.
Daniel 3 56 Blessed are you in the firmament of heaven, praiseworthy and glorious forever.
2 Maccabees 1 17: Blessed in every way be our God, who has brought judgment upon those who have behaved impiously.
Luke 1 68: "Blessed be the Lord God of Israel, for he has visited and redeemed his people,
2 Corinthians 11 31: The God and Father of the Lord Jesus, he who is blessed for ever, knows that I do not lie.
Ephesians 1 3: Blessed be the God and Father of our Lord Jesus Christ, who has blessed us in Christ with every spiritual blessing in the heavenly places,