Why Is There So Much Pain and Suffering?

God allowed Satan to cause Job to suffer, Job 1:6-12. Jesus described the destruction of a farmer’s harvest in Matt. 13:28, “An enemy did this.” Why does God not kill the Devil? Then why does God not kill us, who also do evil every day! Judgment is preceded by warning. The OT and NT are filled with God’s warnings and pleadings ................
................