Contradiction with Exodus 20:5
This verse states that God is jealous and will punish, which may conflict with the theme of rejoicing and exultation in God found in Mary's song.
Exodus 20:5: Thou shalt not bow down thyself to them, nor serve them: for I the LORD thy God [am] a jealous God, visiting the iniquity of the fathers upon the children unto the third and fourth [generation] of them that hate me;
Contradiction with Matthew 13:57
This verse mentions a prophet being without honor in his own country, possibly contradicting the honor and exaltation expressed in Mary's words.
Matthew 13:57: And they were offended in him. But Jesus said unto them, A prophet is not without honour, save in his own country, and in his own house.