In 1939 just before the outbreak of World War II, Germany and Russia signed the Molotov–Ribbentrop Pact. This treaty promised that neither nation would attack the other, and it laid out a plan for how they would divide the nations of Eastern Europe between them. Yet in 1941, without warning or provocation, Adolf Hitler sent his tanks across the Russian border in a sneak attack. Hitler had no interest in keeping his word; the treaty was meant only as a temporary measure until he could do what he wanted.
The devil will you tell you anything you want to hear to get you to do what he wants you to do. He is a master liar; in fact, Jesus declared Satan to be "the father of lies" (John 8:44). The devil breaks every promise that he makes. He never delivers what he leads us to expect. While sin may be enjoyable for a little while (Hebrews 11:25), it always leads to a bitter end.