When I was a child, my Mom used scripture to teach and correct me. One of her favorites was found in Numbers 32:23b “..you may be sure your sin will find you out.” This was a warning not to try to hide or excuse bad behavior. I could lie about cleaning my room, but sooner or later, Mom would find out. I could pretend to eat my peas at dinner, but sooner or later, my pile of uneaten veggies would show up as evidence. And I could be nice to my little sister around company, but that wouldn’t fool those who knew us well, or convince my sister that I wasn’t going to be bossy after they left. Most importantly, God would know what I did– and I would know that God knew!
Sin is more than just a simple action, or an accident. Sin is an infection–a poison. And it leaves traces, and scars, and has consequences– not just in actions or consequences, but in the shaping of our minds, attitudes, and character. Sin– concealed, denied, ignored, or excused–breeds and grows; it poisons our thoughts and emotions. Instead of reacting openly and honestly, we become defensive, secretive, paranoid, and apprehensive.
Praying involves communicating openly and honestly with God. Sin will get in the way of that communication. Not on God’s part– He is unchanging. But on our part– we will not be fully open with God. We will be suspicious of His goodness, and doubtful of His mercy. We will try to hide our guilt and our true motives. As early as the Garden of Eden, this is the pattern. Adam and Eve tried to hide from God after they had eaten the forbidden fruit. “Where are you?” asked God (Genesis 3:9). Certainly He knew where they were, and why they were hiding. But Adam replied, “…I was afraid because I was naked; so I hid.” (Genesis 3:10) When God asked Cain about his brother, Cain tried to cover-up the murder with distractions. “I don’t know. Am I my brother’s keeper?”(Genesis 4:9) God never asked Cain whether or not he was responsible for his brother. But God already knew that Cain had killed Abel; Cain’s attempts to redirect the conversation did nothing to hide his guilt– it merely confirmed that Sin had wormed its way into his thoughts and attitudes. Cain never asked for forgiveness. He never confessed to the murder of his brother. Instead, he received the punishment for his sin– banishment and isolation. Later, Cain’s descendants even bragged about their family history of murder and exile! (Genesis 4:23-24)
Of all the people we might try to impress, God cannot be fooled by our false righteousness. He cannot be impressed or distracted by arguments or justifications. And He can’t ignore how Sin is poisoning us, and leading us toward death– both physical and spiritual death. Even “little” “secret” sins will infect our relationships– with God and with others– and cause us to grow emotionally and spiritually numb. Unfortunately, the poison of Sin can cause us to withdraw further from the very source of healing. We attempt to bargain with God; to justify or excuse our actions in our own eyes, asking Him to ignore our condition. We may even be defiant, knowing we deserve punishment, but doubting God’s willingness or ability to bring about justice. We march boldly in the opposite direction, doubling down on our bitterness, anger, or shame.
We need to seek God’s mercy and grace through confession and repentance. God is faithful to forgive and eager to restore to us the joy of His salvation (Psalm 51:11) He will do what all our mind-games and excuse-making cannot do–He will remove our sins from us as far as the east is from the west (Psalm 103:12). And once the poison of Sin is drawn off, we can see and hear, think and act with a clear conscience, free of guilt and shame; free of secrets and excuses. We may still face the earthly consequences of our actions– punishment for things we’ve stolen or lives we’ve hurt, broken relationships or changed circumstances–but the eternal consequences of death and separation from God have been erased by the Blood of Christ and removed forever.
And that will lead us to prayers of worship and thanksgiving, freely and joyfully raised!
For more discussion on this principle, see https://www.gotquestions.org/be-sure-your-sin-will-find-you-out.html