The issue you're raising touches on a classic theological question known as the "problem of evil."

God's omnipotence and omniscience don't mean He intervenes to stop every evil act. As some have already mentioned, He allows humans free will, which is necessary for genuine love and moral choice.

Evil exists because people choose to do wrong, not because God causes it. However, God will ultimately judge evil and bring justice. His patience reflects His desire for people to repent and turn to Him, avoiding judgment. Just because He hasn't stopped or judged Evil, doesn't mean He can't or won't.

Romans 3:23 states, "For all have sinned and fall short of the glory of God," highlighting humanity's universal condition of sinfulness. Romans 3:10 adds, "As it is written: 'None is righteous, no, not one.'"

In light of this, if God were to immediately judge evil, all would be deserving of judgment - hopefully He wouldn't start with you. However, 2 Peter 3:9 reminds us, "The Lord is not slow to fulfill his promise as some count slowness, but is patient toward you, not wishing that any should perish, but that all should reach repentance." This reflects God's desire for people to turn from their sins and find salvation, rather than face immediate judgment.

Hope that helps.