God’s character, and the revelation of it in contrast to Satan’s misrepresentation, is a key to gaining a proper understanding of Bible prophecy. The struggle between Christ and Satan is THE topic of the Bible, and that struggle is primarily a spiritual one. It is over the minds and hearts of men, regarding the justness and rightness of God’s character and ways. A misunderstanding of this key point spells disaster when interpreting prophecy.
God’s character is expressed in the word love:
God is love. 1 John 4:8
But His love is also defined in the principles of His law:
For this is the love of God, that we keep his commandments. 1 John 5:3
The two great commandments are love to God and love to man:
Jesus said unto him, Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind. This is the first and great commandment. And the second is like unto it, Thou shalt love thy neighbour as thyself. On these two commandments hang all the law and the prophets. Matthew 22:37-40

The law, or love, can be summed up as selfless service, irrespective of the cost to myself. Love “seeketh not her own.” (1 Corinthians 13:5)
God’s kingdom is one in which the subjects (us) are to be like Him in character. He asks us to keep His law, because that is His very own character:
Ye shall be holy: for I the LORD your God am holy. Leviticus 19:2
And how are we to be holy? By keeping His commandments!
Do all my commandments, and be holy unto your God. Numbers 15:40
Unlike earthly kings, who make laws to keep their subjects in order, and which they are not bound to keep, God keeps His own law. Jesus said:
I delight to do your will, O my God, for your law is within my heart. Psalm 40:8
Satan’s rebellion in heaven and on earth, attacks both of these points: God’s character, and His law. You can see this very simply at the fall, when the serpent implied that God was holding back something good from man:
God hath said, Ye shall not eat of it, neither shall ye touch it, lest ye die. And the serpent said unto the woman, Ye shall not surely die: for God doth know that in the day ye eat thereof, then your eyes shall be opened, and ye shall be as gods, knowing good and evil. Genesis 3:3-5
Here Satan (through the serpent) presents the idea that the law is a restriction, imposed to keep us down. “God just doesn’t want you to be like Him, He wants to keep all the power and glory to Himself!” As well, Satan’s charge implies that God was lying to them, hence the attack on His character. “He can’t be trusted, He’s selfish!” Satan offered another way, a supposed improvement to God’s government.
How could God answer these charges? If He terminated Satan’s life, then everyone would think that maybe God was trying to hide the truth, and anyway, hurting those who disagree with you is not part of a kingdom of love. Therefore, it could not be a contest of mere physical strength.