Peter wants Christians to know that there will certainly be scoffers in the last days (the days between the Messiah's first coming and His second coming) who make light of sin and make fun of salvation by grace through Christ. They will mock at the Lord's promise of His return. They don't believe that He will come because they don't see any changes. These scoffers deny Biblical truths and follow their own sinful desires. They have no reverence for God. They resist the idea of a time of judgment and moral accountability because they love their self-indulgence too much. Obviously, they are spiritually blind since in reality, things are not as they were. Things will continue to get worse before Jesus returns. God is sovereign. He is working toward His purpose. He always keeps His promises according to His own timing, not ours. "There is a living God; He has spoken in the Bible; He means what He says and will do all He has promised." (Hudson Taylor) Don't listen to these scoffers and become spiritually apathetic and asleep in the light. Jesus will return! Peter wants us to be alert and active in living for God.