Israel what does Hashem request from you, but only to fear him
and to follow in his ways and to serve Hashem with all your heart
and all your soul."
The Sefer Hamagid on the Torah writes that this Pasuk tells us that a human being does not have in his powers to achieve anything, if Hashem isn't there helping him.
What ever one achieves in this world, physical and spiritual, is all a present from Hashem. Thus one is not left with anything to do in this world, but to fear Hashem (Berochos 33:b).
The true deeds of a person, is his fear of Hashem and learning and keeping the Torah.
People at times think that it is the work of their hands that bring their wealth.
The Sefer Shai L'Torah brings down a story about a Talmid of the Beis Halevi, after this Talmid learnt many years, he decided to move to a different city and to work in order to support his family. At first this Talmid kept up with his learning, yet as the time went bye, he started getting more wealthy, and his learning went down drastically.
One day the Beis Halevi came to his city and this previous Talmid of his came to greet the Rav.
The Rav asked him, "What are you doing now?"
The Talmid started telling him of his new business, and how successful he is.
Again asked the Rav, Nuh "What are you involved in now?"
The Talmid started
giving an in depth explanation of his work, how many workers he
has, who he sells to...
The Beis Halevi
stopped him in the middle, "All that you have now told me
till now, these are the doings of Hashem, that has given you a
Parnasah. What is your doings? What are you able to tell me
that you have done with your life, what Torah or Yiras Shamayim
have you been doing lately?"
One must realize that all his wealth is from Hashem. One must realize that he is only a banker and Hashem is the one in charge.
Rav Moshe Feinstein brings down by Yaakov and Eisav, Eisav said "I have plenty", meaning that he had more than he could use, because he felt that all the money was his, and he had more than he could use, and he didn't feel responsible for any one else for it.
Yaakov as we know said "I have everything".
that he had everything that he was supposed to have and now it
was his responsibility to figure out what Hashem wants him to
do with his money, how to use it the best way possible to make
his serving Hashem better.
"And it will be if you forget Hashem your G-d".
We know that when the Torah writes Ve'Haya, it refers to joy.
Comes Rav Pliskin
and asks, what joy can there be in forgetting Hashem?
He brings down the Kotzker Rebbe to explain the Pasuk differently.
"If you forget to be in a state of joy", you forget the "Hayah"(joy), than "it will bring you to also forget Hashem your G-d".
When one is in a state of joy, he appreciates more what Hashem has given him, and it is harder for the Yetzer Harah to walk into his life.
One must always
be in a state of joy, yet it must be in the right perspective.