原因一：馬桶原則

周星馳在《濟公》中的名言：

(粵語版)

[有喃嘸佬捉住九世雞話要盆燒祭神求雨]

九世雞：班衰佬呀，平日喺床上對我咁好，點解要用火燒死我�Z？
降龍：個原因係噉嘅，啲人嚟搵你，就好似坐馬桶一樣，坐緊嘅時候固然之係好暢快，但係斷唔會對個馬桶產生感情。

(試譯成普通話)

[有道士抓住九世雞說要盆燒祭神求雨]

九世雞：這些個殺千刀的，平時在床上對我這麼好，為什麼要用火燒死我哇？
降龍：原因是這樣的，這些人來找你，就好象坐馬桶一樣，坐在上面的時候固然是十分暢快，但是他們絕對不會對個馬桶產生感情。

Hesed 評：他瑪的剩餘價值已等於零，嗚呼哀哉！

原因二：窘迫心理

Source: "Commentary Critical and Explanatory on the Whole Bible" by Jamieson, Fausset, Brown

15. Then Amnon hated her exceedingly--It is not unusual for persons instigated by violent and irregular passions to go from one extreme to another. In Amnon's case the sudden revulsion is easily accounted for; the atrocity of his conduct, with all the feelings of shame, remorse, and dread of exposure and punishment, now burst upon his mind, rendering the presence of Tamar intolerably painful to him.

Hesed 評：自卑自負的人一時“色令智昏”而犯下滔天罪行，惱羞成怒抑或有之。

原因三：暴虐成性

Source: "Matthew Henry Complete Commentary on the Whole Bible" by Henry

v. 14. It is to be feared that Amnon, though young, had long lived a lewd life, which his father either knew not or punished not; for a man could not, of a sudden, arrive at such a pitch of wickedness as this. But is this his love to Tamar? Is this the recompence he gives her for her readiness to attend him in his sickness? Will he deal with his sister as with a harlot? Base villain! God deliver all that are modest and virtuous from such wicked and unreasonable men. IV. The devil, as a tormentor and betrayer, immediately turns his love of her into hatred (v. 15): He hated her with great hatred, greatly, so it is in the margin, and grew as outrageous in his malice as he had been in his lust.

Hesed 評：當時外邦人盛行同父異母或同母異父的結合，13節里的“求王，他必不禁止我歸你”無論是他瑪的緩兵之計還是真實心願，卻阻止不了暗嫩的行惡之心。

原因四：神推鬼使

Source: "John Wesley's Explanatory Notes on the Whole Bible" by Wesley

13:15 Hated her - By the just judgment of God both upon Amnon and David, that so the sin might be made public, and way for the succeeding tragedies.

Hesed 評：魔鬼讓暗嫩犯罪，上帝讓邪惡公諸天下作為警戒。