There’s no good reason to practice Christianity if we don’t take our sin seriously. The reason we have Christmas, Good Friday, and Easter is because God sent His only Son to die to save us from the wages of our sin and to give us victory over it. God didn’t send His Son to die for nothing. We can sin by transgression (willful disobedience), omission (not doing the good we know to do), circumvention (doing something to deceive others about some other action), and perversion (taking the holy and using it in an unholy manner). Search me, O God.