Be advis’d, fair maid. To you your father should be as a god;
Egeus as a "god" in this comparison produces an ironic effect. Clearly, Egeus cannot be regarded as a god when he does not have any physical power other than what society and the law provides him. Additionally, Theseus advising Hermia to see her father as a god is an indication of the extreme patriarchal environment of the play.