When God doesn't judge straightaway

“He says to himself, ‘God has forgotten; He covers His face and never sees.’” Psalm 10:11
Often when people engage in some sin, they don’t get caught straight away. A person can have an extra-marital affair that lasts for months or even years, and over time they start convincing themselves that it’s the right thing to do. Someone might make a living from burglary or prostitution. The ultimate judge of all people is of course God, and it’s astounding how many people continue in sin as a knowledgeable act of defiance against Him. They say, ‘If God was really there, He’d strike me down for doing this. But the fact that He hasn’t means either (a) that He doesn’t exist at all, or (b) that He is powerless to stop me, or (c) that He doesn’t notice what I am doing, or (d) that He doesn’t care what I do, or (e) that He approves of what I do.’ But they miss the real reason why God has withheld His judgement from them: “He is patient with you, not wanting anyone to perish, but everyone to come to repentance” (2 Pet. 3:9).
God does exist, He does have the power to judge, He does notice what you are doing, He does care, and He does not approve. But He is also patient – He is giving you time to respond to the Holy Spirit tickling your conscience, and repent of that sin. One day judgement will come, if you have not repented. But until then, there is always time for you to turn around.