Catholics are typically very reactionary in response to anything that impugns their unscriptural exaltation of the holy virtuous Spirit-filled mother of Jesus into a perpetually sinless virgin almost almighty heavenly godness .
Lowry explains,
The lyrics evolved from a series of questions that Lowry scripted for a Christmas program at his church: I just tried to put into words the unfathomable. I started thinking of the questions I would have for her if I were to sit down & have coffee with Mary. You know, "What was it like raising God?" "What did you know?" "What didn't you know?"
However,
The text has received criticism for perceived ambiguity or lack of scriptural or theological depth.[4][6] For example, Lutheran writer Holly Scheer, in addressing the rhetorical question of the song's title, wrote: "Anyone who has even a slight familiarity with the biblical account of Christ's conception and birth shouldn't need to ask if Mary knew, because the Bible plainly tells us she did."[7] Baptist theologian Michael Frost suggests it is the "most sexist Christmas song ever written... It treats her like a clueless child... Could you imagine a song asking Abraham 17 times if he knew he'd be the father of a great nation?"[8] https://en.wikipedia.org/wiki/Mary,_Did_You_Know%3F#Music_and_lyrics
Thus a reasonable examination of "Mary Did You Know" lyrics as regards literal accuracy is in order:
Mark Lowry (Lyrics licensed by LyricFind.) 1. Mary did you know that your baby boy will one day walk on water?
Not likely, nor much of anything of detail as to what the Lord's ministry would entail. Yet such would not be unexpected in the light of her being told that,
And, behold, thou shalt conceive in thy womb, and bring forth a son, and shalt call his name JESUS. He shall be great, and shall be called the Son of the Highest: and the Lord God shall give unto him the throne of his father David: And he shall reign over the house of Jacob for ever; and of his kingdom there shall be no end. (Luke 1:31-33)
2. Mary did you know that your baby boy will save our sons and daughters?
By intimation yes, but not all the scope of the Lord's salvific work which included the Gentiles.
Mary could have been perplexed by the understanding of Jews who typically expected that Christ was coming in judgment. as the temporal conquering king, versus only a spiritual deliverer,.
3. Did you know that your baby boy has come to make you new?
No, it is unlikely that Mary understood the washing of regeneration any more than John the baptizer did, though they were both full of the Holy Spirit.
4 This child that you've delivered, will soon deliver you.
Yes, as her savior from sin, regardless of RC attempts to make her an unstated exception to the norm, while Scripture characteristically states even lesser notable exceptions to the norm.
5.Mary did you know that your baby boy will give sight to a blind man?
6.Mary did you know that your baby boy will calm a storm with his hand?
Not likely to both, but as in #2.
7.Did you know that your baby boy has walked where angels trod?
8. And when you kiss your little baby, you have kissed the face of God.
Perhaps implicitly in both cases, as one filled with the Spirit, if she considered what the implications of being "called the Son of the Highest" likely entailed.
9. The blind will see, the deaf will hear and the dead will live again.
10. The lame will leap, the sums dumb will speak, the praises of the lamb.
Not likely to both, but as in #2.
11. Mary did you know that your baby boy is Lord of all creation?
If meaning functionally would be. (Acts 2:34,35; 1Co 15:25; Heb 1:13; 10:12,13) Perhaps, as in #8.
12. Mary did you know that your baby boy will one day rule the nations?
Likely yes as per #8.
13. Did you know that your baby boy is heaven's perfect Lamb?
If she understood the Messiah as coming as the Lamb, versus the Lion as Jews typically expected.
14.This sleeping child you're holding is the great I am.
Perhaps implicitly as per #8.
Has anyone written a treatise on the Theological Errors in Jingle Bells.
It’s just a song. Nobody’s soul is in danger by singing it.
Frankly it’s a really good song.