2 Corinthians 4-4
4 For the god of this world has blinded the unbelievers’ minds [that they should not discern the truth], preventing them from seeing the illuminating light of the Gospel of the glory of Christ (the Messiah), Who is the Image and Likeness of God.
Note the "god of this world" capitalization. Satan is "god" of the earth and controls its kingdoms.
Matthew 4:8
8 Again, the devil took Him up on a very high mountain and showed Him all the kingdoms of the world and the glory [splendor, magnificence, and excellence] of them; 9 and he said to Him, “All these things I will give You, if You fall down and worship me.” 10 Then Jesus said to him, “Go away, Satan! For it is written and forever remains written, ‘You shall worship the Lord your God, and serve Him only.’” 11 Then the devil left Him; and angels came and ministered to Him [bringing Him food and serving Him].
The temptation of Jesus. Would there have been any temptation if the devil's offerings were not his to give?