Could we insult God?

Presuming God exists as an all knowing being, consider this:

It is funny how some religions warn against blasphemy towards God. How is this possible?

A being that has not only created life, but the universe and time itself, all knowing, infinite..... So... how could a small insignificant life form, human beings, with such a limited perspective on the universe, insult an all knowing entity?

Can an ant insult a human?

Surely it would be insulting to presume anything I could say or do could offend such a being? In fact it is the height of human arrogance to assume I know God and the universe so well that I would know how to insult such a being!