Abraham saw God as Father.
He proved Him to be the source of all things.
Isaac received the inheritance as a son.
It is a blessed thing to have a gift bestowed upon us by God.
Yet even what we receive we may seize upon and spoil.
Jacob attempted to do this, and was only saved from the consequences by having his natural strength undone.
There must be a day in our experience when this happens.
The characteristics of those who truly know God is that they have no faith in their own competence, no reliance upon themselves.