Your clothing did not wear out from upon you these 40 years (Devorim 8:4).

This was a great miracle because it effected a change in the natural course of the world. Clothing normally wears out and the fibers decompose through constant usage. Here in the Midbar, they remained like new forever. Time and sweat had no damaging effect on them because the Clouds of Glory rubbed against them and cleaned them while the waters of the Well scented them with fragrance to keep them from giving off offensive odors

--Rabbeinu Bechaye

A land where you will eat bread without poverty(Devarim 8:9).

Here, the Torah hints to us that one should not overeat to the point of filling his stomach. He should eat only what is necessary to sustain his life. Like the Torah says (Bereishis 42:19), Break the hunger. Enough food to break the hunger and no more. That's what the posuk means here, without poverty. See that you don't eat in poverty, i.e. too little, and at the same time not in great abundance. The same idea is referred to in the next posuk, and eat and be satiated. All that you eat should be in order to satiate your hunger. Like we say to a child when giving instruction, "See to it that this that I am giving you should satisfy you". That is, don't desire more.

--The Sh'loh HaKodosh

I grasped the two tablets anbd i threw them from my two hands and I smashed them before your eyes (Devarim 9:17).

How was it possible that the enitre Camp of Yisroel ( 3 parasangs by 3 parasangs) saw the smashing of the tablets? The posuk says, before your eyes? Since the letters of the tablets ascended Heavenward as they were smashed, K'lal Yisroel understood that the smashing caused the letters to ascend. It was as if the tablets were broken before their eyes.

--Maharsha, Pesachim 87