Michal and David's dispute stemmed from differing attitudes towards kingship.
"אֲשֶׁר נִגְלָה הַיּוֹם " – Midrash Rabbah (followed by others) maintains that Michal despised David for his immodesty in dancing and revealing himself before the maidservants, claiming that this was unbecoming of a king and that her father's household had much more self respect.
"לְעֵינֵי אַמְהוֹת עֲבָדָיו" – Malbim asserts that these words show that Michal was further troubled by David's mingling with those of lower stature than himself. She felt that it was beneath a king's dignity to dance with the masses, as if he were one of them.
David's retort: repetition of "לִפְנֵי י"י" – Twice in his response to Michal, David repeats that his actions were doneלִפְנֵי י"י" ,"
1 emphasizing to his wife that before God, the true King, he really is no different from anyone else in the nation. As such, joining the nation was not shame worthy, but a means of glorifying Hashem.
Michal bat Shaul – Throughout the passage Michal is consistently referred to in relationship to her father, as "בַּת שָׁאוּל". This might be the text's subtle way of emphasizing that Michal's attitude towards David's behavior stemmed from her growing up in Shaul's palace and following the values of her father.
Shaul and honor – Sefer Shemuel suggests in several places that Shaul's downfall lay in his forgetting that, though a king, he was still subservient to Hashem. Thus, both in Gilgal and his battle with Amalek, when he saw himself as above heeding the prophetic command, he was punished with losing the kingship. [For details, see
Shaul's Sin in Gilgal and
Shaul's Sin in the Battle with Amalek.] David's recognition that he must act לִפְנֵי י"י"" thus highlights the contrast between the two kings.
2 "God chose me over your father's house" – In reacting to Michal, David explains to her that their different visions of kingship are what led to the rejection of Shaul and choice of David. While Shaul put human honor above Divine glory, David did the reverse.
3 As such, it was he, not Shaul, who merited to head the dynastic line.
"וּנְקַלֹּתִי עוֹד מִזֹּאת וְהָיִיתִי שָׁפָל" – These words echo David's initial response to the invitation to marry Michal, back in Shemuel I 18, "הַנְקַלָּה בְעֵינֵיכֶם הִתְחַתֵּן בַּמֶּלֶךְ וְאָנֹכִי אִישׁ רָשׁ וְנִקְלֶה". Perhaps already then, David identified the difference between himself, "a lowly man" and the lofty House of Shaul.
No children – All of these sources read this as a punishment for Michal's words.
4 It is possible that until this story, Michal stood the chance of being the Queen Mother and bearing the heir to the throne. However, once she demonstrated that she had inherited the traits of her father's house, Michal was no longer considered worthy. Thus, the story concludes with the fact that she did not bear any children, highlighting that she was the end of the line, and that the Davidic dynasty would not continue with any of Shaul's blood.
5 Hanging of "Michal's children" – According to Radak and Ralbag, the children that David hanged were actually born to Merav, and are only attributed to Michal since she helped raise them. Regardless, the story further highlights how Shaul's line had no hopes of revival.
Portrait of David – This approach views David positively, as a model of what a king should represent.
Michal's outburst related to her personal, family life with David. Seeing him dance with the maidservants highlighted the problematic nature of in their relationship.
Michal's love of David – Michal is introduced to the reader in
Shemuel I 18 with the words "וַתֶּאֱהַב מִיכַל בַּת שָׁאוּל אֶת דָּוִד". The scene ends as it begins, with the fact of her love: "וּמִיכַל בַּת שָׁאוּל אֲהֵבַתְהוּ". As Michal is the only woman in Tanakh (excepting the beloved in Shir HaShirim) explicitly mentioned to have loved a man, the emotion is all the more stark.
David's love for Michal – Though Shemuel I 18 does not reveal David's feelings regarding Michal,
7 his motive for taking her as a wife is explicit: "וַיִּשַׁר הַדָּבָר בְּעֵינֵי דָוִד לְהִתְחַתֵּן בַּמֶּלֶךְ". The contrast between the couple is clear: while Michal desires to marry David because she loves him, David desires Michal because she is an instrument which will allow him to marry into kingship.
8 Michal saves David – When Shaul seeks to kill David in his home in
Shemuel I 19, Michal sides with her husband,
9 putting her love into action as she devises and executes a plan to save David. David, too, replies with action as he "goes, flees, and escapes" – with not a word to the wife he is leaving behind.
10 Again, while Michal cares for David, he cares for himself. Michal is simply the instrument which will enable him to become king.
David remarries – The next mention of Michal is in
Shemuel I 25. The narrator shares that while on the run, David took two new wives, Avigayil and Achinoam. The very next verse reveals that Michal, on the other hand, was given away by Shaul to Palti b. Layish. The juxtaposition of the two facts sends the message that, in David's eyes, Michal was replaceable.
"תְּנָה אֶת אִשְׁתִּי אֶת מִיכַל" – Though one might like to read David's ultimatum to Avner - that he would only agree to an alliance if Avner returned Michal - as a sign of David's love and devotion, it is more probable that this, too, was a political ploy. David needed Michal to demonstrate his rights to the throne. If he were related through marriage to Shaul, he need not be viewed as a usurper.
11 "אֲשֶׁר נִגְלָה הַיּוֹם לְעֵינֵי אַמְהוֹת עֲבָדָיו" – In these words, Michal ostensibly chastises David for his immodesty and lack of royal dignity. In reality, though, she might simply be giving vent to her jealousy, born from years of neglect; David has revealed himself to other women, but never to her.
12 "God chose me over your father's house" – David's reply insinuates that now that he has been chosen as king in his own right, with the House of Shaul rejected, Michal no longer held any political utility. As such, he could consort with whomever he liked, even maidservants.
Michal "bat Shaul" – Michal might be referred to in this manner to highlight that for David, she had never been important except in her role as "the daughter of Shaul."
"לִפְנֵי י"י" – This approach does not relate to David's two-fold mention that he is acting "before Hashem." It might suggest that this is David's way of preempting any possible retort from Michal. If he is dancing before God, how can she complain?
No children – It is possible that after this interchange, with their relationship beyond repair, David simply ceased to have conjugal relations with Michal, condemning her to barrenness.
Portrait of David – This approach views David negatively. Though he might be a savvy politician, on the domestic front he is found lacking. That said, it is common in Tanakh for marriages to be made for political purposes and as a means to form alliances, so David's relationship with Michal is not unusual. Though Michal might have been hurt, an emotional bond in marriage should not necessarily have been expected.
Biblical parallels: David and Yonatan – It is possible that David's relationship with Yonatan, too, is an uneven one, with Yonatan consistently on the giving end and David on the receiving. Thus, it is Yonatan who repeatedly saves David and sacrifices for him, while David does nothing in return. David's eulogy for Yonatan reflects this, as he speaks only of Yonatan's love for him and not the reverse: "נִפְלְאַתָה אַהֲבָתְךָ לִי מֵאַהֲבַת נָשִׁים".