It is here that we enter this week's parsha. Pharaoh is living in denial after five incredible acts of Hashem's great power. He is continuing to oppress G-d's people. He is continuing to hold them captive as slaves. He is continuing to deny Hashem as G-d of the entire universe.
Denial is very simple and very complicated.
This is true to a degree. However it is not true when one's sin has an effect beyond oneself. We see the grounds for the first case in Genesis 3 when Kayin brings poor quality fruit as a sacrifice to Hashem. His brother Hevel brings a firstborn from the very best of his flock. Hevel's offering is accepted and Kayin's is rejected.