So sin is a lose (offends God), lose (hurts people), lose (hurts you). Nobody is perfect. But if we think more deeply about the multi-dimensional impact of sin, we’d be more eager to avail ourselves to the means of grace to grow in love for our Savior and hatred of our sin.
Vertical (offends God)
First and foremost, your sin — whether in act, attitude, or nature — is an affront to a holy God. “Against you, you only, have I sinned and done what is evil in your sight. . .,” (Psalm 51:4) King David says, after his adultery with Bathsheba and murder of Uriah. Before we talk about how sin hurts the people in your life or is a form of self-infliction, we must say that sin offends God. Commit one sin, and you are guilty of violating the entire Law (James 2:10). As born sinners (Psalm 51:5), sin doesn’t just involve the wrongs we commit (sins of commission), or right actions we neglect (sins of omission), but also involves our nature, our very being. We are totally depraved, born as rebellious, God-haters, self-lovers, glory thieves who rightly incur the wrath of God apart from a Savior. Of the five points of Calvinism, total depravity is the easiest to prove.
Horizontal (hurts people)
Sin is willful treason that offends a holy God but also hurts the people in your life. The more you sin, the more people you hurt. The more influence you have, the greater the effects your sin will have on others (hence, why it’s particularly hurtful when sinned against by a leader).
Let me say this a different way. Your unrighteous anger hurts your children.