Today's first reading is one of the more problematic in the Bible. Jacob lies to his dying father, steals his brother's inheritance and ends up with God's blessing. My guess is that something inside everyone of us says that it's not fair. A liar and a thief should be punished, not blessed.
The problem is the shortness of our vision. We see the world one action at a time. We may if we are wise be able to develop a slightly larger perspective but we will never have the perspective of God who sees all time and space simultaneously and therefore can see what we cannot. He sees how all of it, everything that ever was, is or will be, fits together into a cohesive whole.
This in no way means that the sin is not sin. A lie is a lie and theft is theft. But only God can truly know how justice is best applied. For our part we have to trust God. And trusting God does not mean angrily thinking inside, "God will get them eventually."
Imagine for a moment if we took every single moment that we have spent judging the actions of another, and focused that same energy on conforming our own words and actions to God's will. Imagine how much holier each of us would be.