Satan is a fallen angel and is not a challenge for God in any way.
Satan’s only power sits in his ability to lie to humans. The only problem God had was the power Satan had over Adam (mankind) because Adam believed lies.
Please note that the fall was Satan lying and Adam & Eve, believing and responding to those lies.
God’s challenge is therefore a hostage situation. Destroying Satan is easy, saving Satan’s followers, which is all of mankind is not so easy. It is in fact a suicide mission for Christ.
Satan’s power is easy to brake, Satan’s power over us is not easy to brake, it cost Christ His life. All warfare and victory that involves humans is rooted in the Cross. Please remember it is not only Jesus who dies on that Cross, You and I are baptized into that death, we actually die with Christ, and only then are we set free. See Romans 6 this profound revelation.
Satan’s grip and his only power was destroyed at the Cross.
14 Inasmuch then as the children have partaken of flesh and blood, He Himself likewise shared in the same, that through death He might destroy him who had the power of death, that is, the devil, 15 and release those who through fear of death were all their lifetime subject to bondage. 16 For indeed He does not give aid to angels, but He does give aid to the seed of Abraham. 17 Therefore, in all things He had to be made like His brethren, that He might be a merciful and faithful High Priest in things pertaining to God, to make propitiation for the sins of the people. 18 For in that He Himself has suffered, being tempted, He is able to aid those who are tempted.
” (Hebrews 2:14–18, NKJV)
All things are reconciled by the Cross
16 For by Him all things were created that are in heaven and that are on earth, visible and invisible, whether thrones or dominions or principalities or powers. All things were created through Him and for Him. 17 And He is before all things, and in Him all things consist. 18 And He is the head of the body, the church, who is the beginning, the firstborn from the dead, that in all things He may have the preeminence.19 For it pleased the Father that in Him all the fullness should dwell, 20 and by Him to reconcile all things to Himself, by Him, whether things on earth or things in heaven, having made peace through the blood of His cross.
” (Colossians 1:15–20, NKJV)
Christ went to hell to preach having already broken Satan’s grip on us through His own death
6 For this reason the gospel was preached also to those who are dead, that they might be judged according to men in the flesh, but live according to God in the spirit.
” (1 Peter 4:6, NKJV)
We are set free in Christ’s death
12 buried with Him in baptism, in which you also were raised with Him through faith in the working of God, who raised Him from the dead. 13 And you, being dead in your trespasses and the uncircumcision of your flesh, He has made alive together with Him, having forgiven you all trespasses, 14 having wiped out the handwriting of requirements that was against us, which was contrary to us. And He has taken it out of the way, having nailed it to the cross. 15 Having disarmed principalities and powers, He made a public spectacle of them, triumphing over them in it.
” (Colossians 2:12–15, NKJV)
Armageddon is still fought on the basis of Christ’s shed blood
Christ’s robe is dipped in blood before the battle. It His own blood.
11 Now I saw heaven opened, and behold, a white horse. And He who sat on him was called Faithful and True, and in righteousness He judges and makes war. 12 His eyes were like a flame of fire, and on His head were many crowns. He had a name written that no one knew except Himself. 13 He was clothed with a robe dipped in blood, and His name is called The Word of God. 14 And the armies in heaven, clothed in fine linen, white and clean, followed Him on white horses. 15 Now out of His mouth goes a sharp sword, that with it He should strike the nations. And He Himself will rule them with a rod of iron. He Himself treads the winepress of the fierceness and wrath of Almighty God. 16 And He has on His robe and on His thigh a name written:
KING OF KINGS AND LORD OF LORDS
” (Revelation 19:11–16, NKJV)