The imagination of sinners is always vain and against God. Although, the Lord wanted them to multiply and fill the whole earth, the men of Babel imagined building a city and a tower that will reach unto heaven. By their rebellious imagination, they wanted to dwell together in Babel that they may not be scattered abroad upon the face of the whole earth. Because their minds were not renewed, their deeds were evil, unacceptable and against the perfect will of God.
It is foolishness to strive with your Maker. Broken pieces of pottery may strive with themselves, but the clay cannot argue with the potter about how it should be fashioned: "If one man sin against another, the judge shall judge him: but if a man sin against the LORD, who shall intreat for him?" - 1 Samuel 2:25a. Like a lump of clay every man should allow the Potter to do whatever He pleases with them.
Fear is the absence of faith. And without faith it is impossible to please God. Having said, "Let us pass over unto the other side", Jesus expected His disciples to believe that they would arrive there safely. However, the Lord was disappointed because the disciples manifested fear in the face of a storm instead of trusting that they would get over to the other side. They did not believe that the Lord would do as He had said.
A backslider is one who moves away from Christ rather that moving towards Him, after salvation by grace through faith. Backsliding is forbidden for every believer in Christ because it makes them unfit for the kingdom of God. There is no point in getting saved if one will not make heaven at last. In our walk with God, we must always remember Lot's wife, who was saved but later backslid by looking back with the desire to return to Sodom.
If Satan had the power, he would have killed everyone on the earth and destroyed the world in a moment. But glory be to God, all power in heaven and in earth belong to Jesus Christ, the only begotten Son of the Almighty God. Therefore, there is a limit to what Satan can do in your life. He does not have the final say in the issues and affairs of your life. Although he may afflict you, Satan cannot destroy you if you remain faithful to Jesus Christ, the source of all power.