1 Sam 10:1,6-7, 1 Sam 12:19,22, 1 Jn 3:8, Heb 2:14, Col 2:15, Jn 16:33, Jn 12:31, Jn 16:11, Col 1:13, Zech 9:9, Mt 16:28, Phil 2:10, Rev 1:5, Rev 17:14
In the Old Testament, God set up kings to save the people of Israel from their enemies. (1 Samuel 9:16-17, 1 Samuel 10; 1,6-7)
1 Samuel 9:16 To morrow about this time I will send thee a man out of the land of Benjamin, and thou shalt anoint him to be captain over my people Israel, that he may save my people out of the hand of the Philistines: for I have looked upon my people, because their cry is come unto me. 17 And when Samuel saw Saul, the Lord said unto him, Behold the man whom I spake to thee of! this same shall reign over my people.
1 Samuel 10:1 Then Samuel took a vial of oil, and poured it upon his head, and kissed him, and said, Is it not because the Lord hath anointed thee to be captain over his inheritance? 6 And the Spirit of the Lord will come upon thee, and thou shalt prophesy with them, and shalt be turned into another man. 7 And let it be, when these signs are come unto thee, that thou do as occasion serve thee; for God is with thee.
In the Old Testament, it was prophesied that the true king of Israel would come riding on a donkey. (Zec 9:9)
Zec 9:9 Rejoice greatly, O daughter of Zion; shout, O daughter of Jerusalem: behold, thy King cometh unto thee: he is just, and having salvation; lowly, and riding upon an ass, and upon a colt the foal of an ass.
The kings established in the Old Testament were not perfect and eternal kings. God has raised Christ, the perfect and eternal King, to destroy our enemy, the devil. (1 John 3:8, Hebrews 2:14)
1 John 3:8 He that committeth sin is of the devil; for the devil sinneth from the beginning. For this purpose the Son of God was manifested, that he might destroy the works of the devil.
Hebrews 2:14 Forasmuch then as the children are partakers of flesh and blood, he also himself likewise took part of the same; that through death he might destroy him that had the power of death, that is, the devil;
By dying on the cross, Jesus overcame the ruler of the world, Satan, and delivered us from the hand of Satan. (Col 2:14-15, John 16:33, John 12:31, John 16:11, Col 1:13, Philippians 2:10)
Col 2:14 Blotting out the handwriting of ordinances that was against us, which was contrary to us, and took it out of the way, nailing it to his cross; 15 And having spoiled principalities and powers, he made a shew of them openly, triumphing over them in it.
John 16:33 These things I have spoken unto you, that in me ye might have peace. In the world ye shall have tribulation: but be of good cheer; I have overcome the world.
John 12:31 Now is the judgment of this world: now shall the prince of this world be cast out.
John 16:11 Of judgment, because the prince of this world is judged.
Col 1:13 Who hath delivered us from the power of darkness, and hath translated us into the kingdom of his dear Son:
Philippians 2:10 That at the name of Jesus every knee should bow, of things in heaven, and things in earth, and things under the earth;
At the end of the world, Christ Jesus, the King of kings, will come again to completely destroy Satan. (Mt 16:28, Rev 1:5, Rev 17:14)
Mt 16:28 Verily I say unto you, There be some standing here, which shall not taste of death, till they see the Son of man coming in his kingdom.
Rev 1:5 And from Jesus Christ, who is the faithful witness, and the first begotten of the dead, and the prince of the kings of the earth. Unto him that loved us, and washed us from our sins in his own blood,
Rev 17:14 These shall make war with the Lamb, and the Lamb shall overcome them: for he is Lord of lords, and King of kings: and they that are with him are called, and chosen, and faithful.