ה֣וּא יַלְוְךָ֔ וְאַתָּ֖ה לֹ֣א תַלְוֶ֑נּוּ ה֚וּא יִהְיֶ֣ה לְרֹ֔אשׁ וְאַתָּ֖ה תִּֽהְיֶ֥ה לְזָנָֽב׃
El te prestará á ti, y tú no prestarás á él: él será por cabeza, y tú serás por cola.
Midrash BeChiddush
35. “The stranger in your midst shall rise above you higher and higher,” (Deut. 28:43) refers to the Egyptians. It refers to the Erev Rav, the mixed multitude,221Erev Rav was a group that included Egyptians and others who had joined Israel on the Exodus. According to Jewish tradition, they were accepted by Moses as an integral part of the people. Their influence is said to have been involved in the golden calf and other incidents where the people questioned Moses and his laws. Erev Rav - Wikipedia who were not Egyptians. They rose higher and higher while (the Egyptians) descended lower and lower. Further, it is established that, “He shall lend you,” (Deut. 28:44 ) should be read, “They shall lead you ( ילוו),” from the word (לויה), leviyah, as in, they led them to their grave. Similarly, “he shall be the head,”(Deut. 28:43) and also, “If you pay the bride-price for a wife, another man shall lie with her.” (Deut. 28:30) This is because most of the Egyptians who pursued the Israelites were married but had not yet consummated their marriages when they died. Not only that but they saw other men lying with their wives.
Or HaChaim
ידבק השם בך את הדבר, "G'd will make the pestilence adhere to you, etc." The penalties introduced with this verse through verse 44 ending with the words: "you will be the tail," refer to your failure to observe the negative commandments. This is the reason verse 45 concludes appropriately with: "because you have failed to hearken to the voice of your G'd to observe His commandments and His statutes which He commanded you." Any intelligent student will realise that all these terrible curses are the result of the commission of sins. The reason the Torah uses the simile "G'd will make the pestilence adhere to you," is because we know that if one commits only a single transgression the spiritually negative force one has created thereby attaches itself to the personality of the guilty person and eventually becomes part of his soul. This is the mystical dimension of mental illness. This evil part of man is called דבר, pestilence, as we have learned in Chabakuk 3,5: "pestilence walks ahead of Him." Satan, here called "pestilence," is described as preceding G'd. All the forces of evil are branches of Samael i.e. Satan, and are called by his name. All the various diseases and afflictions mentioned in our chapter are variations of the theme. When Rabbi Ami in Shabbat 55 claims that there is no death which is not due to sin and that there are no afflictions which are not the result of sin, he meant that sin "gives birth" to a variety of bodily afflictions. Jeremiah 2,12 speaks of the bodily afflictions being the result of Israel's wickedness.