'...And He gave to Moses...tablets of stone, written by the finger of God.' Exodus 31:18 ESV
The finger of God in stone. Why do you think God wrote the Ten Commandments in stone? Because His principles are permanent and unchanging. You say, 'But what about all those people who have never heard God's Word? How will He judge them?' Paul answers: 'Even Gentiles, who do not have God's written law...show that they know His law when they instinctively obey it...They demonstrate that God's law is written in their hearts, for their own conscience and thoughts either accuse them or tell them they are doing right' (Romans 2:14-15 NLT).
Your conscience acts like a compass. If you let it, it'll guide you right. But when you reject its warnings, its voice gets quieter and quieter until you can no longer hear it. That's a dangerous condition to be in. Paul writes, 'Having faith and a good conscience, which some have rejected, concerning the faith, have suffered shipwreck' (1 Timothy 1:19 NKJV).
Picture yourself standing on a bridge, dropping pebbles into a pond and watching the ripples go out to the edge. It's just a little pebble, but look at the effect it has! Yet in winter, when that same pond freezes over, you can drive a truck across it. Your conscience is like that. When you keep disobeying God, your heart becomes calloused and hardened and you no longer hear Him speaking to you. Paul writes, '...I strive always to keep my conscience clear before God and man' (Acts 24:16 NIV). That's a good rule of thumb for you to live by!
SoulFood: Luke 24:50-53, Acts 1:1-11, Eph 4:7-10 (Ascension Day)