It may be that we sometimes look at sin and think that it cannot be that big of a deal, especially if no one else knows about it or if no one else is harmed by it. We could not be more wrong!
Consider the story of Joseph in Egypt with Potiphar’s wife. Notice the contrast (and therefore, the emphasis) that Joseph places on the consequences of his potential sin. When Potiphar’s wife persistently tempted Joseph “to lie with her and to be with her,” Joseph spoke of his two masters very differently. “Look, my master does not know what is with me in the house, and he has committed all that he has to my hand. There is no one greater in this house than I, nor has he kept back anything from me but you, because you are his wife. How then can I do this great wickedness, and sin against…?” (Gen. 39:8-10). Did he say, “…sin against Potiphar”? He could have, and he would have been consistent in his explanation. But, NO! Joseph knew even more that his sin would be “against God“!
Is sin a big deal? Yes! Huge! Every single one is “against God” (see Psa. 51:4)!