Komentaryong Sumisipi para sa Mga Awit 91:12

ויפגעו בו מלאכי אלוקים, “and angels of G’d met him.” These were the same angels who had been mentioned at the beginning of the portion who had been ascending and descending the ladder Yaakov had seen in his dream. This is what the Torah added כאשר ראם, “as he had seen them.” In other words, he was already familiar with these angels. We have a similar construction in Ezekiel 10,20 היא החיה אשר ראיתי , “this is the angel whom I had seen, etc.” Actually, the Torah could have written ויפגע במלאכי אלוקים, “he encountered angels of G’d.” The reason the Torah wrote that the angels met Yaakov instead of vice versa is a compliment to Yaakov. The purpose of the encounter was in order to protect Yaakov. It is similar to Psalms 91,15 כי מלאכיו יצוה לך לשמרך בכל דרכיך, “for He will command His angels to guard you (the righteous) on all your paths.”
There is a discussion in the Midrash Bereshit Rabbah 78,2 as to who is greater, the guardian or the person whom he guards? The Midrash concludes that the person being guarded is greater than the guardian. The Midrash came to this conclusion based on the verse (Psalms 91,12) “to guard you on all your paths to carry you in their hands lest you hurt your foot on a stone.” The Midrash also asks: “who is greater the carrier or the one being carried?” It concludes that the person being carried is the more important of the two. Finally, the Midrash asks: “who is more important the one being met or the one who goes out to meet someone?” The Midrash concludes that the person being met is the more important of the two. We find some support for this in connection with the prophet Elisha. We read in Kings II 6,15: “when the attendant of the man of G’d rose early and went outside, he saw a force, with horses and chariots, surrounding the town and he said to his master: ‘what shall we do?’” The verse goes on to say: “do not be afraid there are more on our side than on theirs.” A little later the verse continues: “G’d opened the eyes of the servant and he saw and here the mountain all around Elisha was covered with horses and chariots of fire.” [The paragraph started with the one who meets, only to conclude with the ones being met, the latter becoming the victors in the ensuing battle. Ed.]

and for a stone upon which to dash oneself upon which the feet are dashed. This is an expression of stumbling, as (in Jeremiah 13:16): “[Before] your feet are dashed (יִתְנַגְּפוּ),” (Psalms 91: 12), “Lest you dash (תִּגֹּף) your foot on a stone.”

ונגפו AND HURT [A WOMAN WITH CHILD] — The root נגף always signifies “dashing against” and “striking”. Examples are: (Psalms 91:15) “lest thou dash (תגוף) thy foot against a stone”; (Jeremiah 13:16) “and before your feet dash (יתנגפו)”; (Isaiah 8:14) “but for a stone of dashing (נגף).

shall not stumble Heb. לא תגוף. This is an expression of stumbling, (achopper in French, straucheln in German. And so in Jeremiah 13:16 Psalms 91.12.) And so (Ps. 91:12). “Lest your foot stumble (תגף) on a stone”; and so (Jer. 13:16): “And before your feet stumble (יתנגפו)” and so (Ex. 21:22): “and they dash (ונגפו) a pregnant woman.”

נגף את כל גבולך I WILL PLAGUE ALL THY BOUNDARIES — נוגף means smiting. So, too, wherever a form from the root נגף occurs, it does not necessarily denote killing but it may mean merely smiting. Similarly, (Exodus 21:22) “and if they hurt (ונגפו) a woman with child”, does not mean they kill (as the context shows); so, too, (Jeremiah 13:16) “and before your feet stumble (יתנגפו)” (i. e. hit against something); (Psalms 91:12) “lest thou dash (תגף) thy foot against a stone”; (Isaiah 8:14) ”and for a stone of stumbling (נגף)‎”.