Luke 1:15 When Elizabeth heard Mary’s greeting, the baby leaped in her womb…

What did Mary actually proclaim to her cousin that made JtB leap? What the angel had told her about Messiah.
Luke writes of JtB:
“Luke 1:15 For he shall be great in the sight of the Lord, and shall drink neither wine nor strong drink; and he shall be filled with the Holy Ghost, even from his mother’s womb”.
Jeremiah 1:5 “Before I formed thee in the belly I knew thee; and before thou camest forth out of the womb I sanctified thee, and I ordained thee a prophet unto the nations.
49 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.
2  And he hath made my mouth like a sharp sword;
In the shadow of his hand hath he hid me,
And made me a polished shaft;
In his quiver hath he hid me;
3  And said unto me, Thou art my servant,
Samson: Judges 13:3 And the angel of the LORD appeared unto the woman, and said unto her, Behold now, thou art barren, and bearest not: but thou shalt conceive, and bear a son. 4 Now therefore beware, I pray thee, and drink not wine nor strong drink, and eat not any unclean thing: 5 For, lo, thou shalt conceive, and bear a son; and no rasor shall come on his head: for the child shall be a Nazarite unto God from the womb: and he shall begin to deliver Israel out of the hand of the Philistines. 6 Then the woman came and told her husband, saying, A man of God came unto me, and his countenance was like the countenance of an angel of God, very terrible: but I asked him not whence he was, neither told he me his name: 7 But he said unto me, Behold, thou shalt conceive, and bear a son; and now drink no wine nor strong drink, neither eat any unclean thing: for the child shall be a Nazarite to God from the womb to the day of his death.