Satan doesn't fear God because he was blinded by wanting to be like God, and the reason evil people don't fear God is because their spirit of antichrist has given them the power to not fear God just like Satan the devil, and when that happens they become walking devils, demons possessed but God knew this would happen that's why he explained HIS nature to us in 1 John 5:7-9 so we would know and recognize when we see someone being possessed or being the manifestation of the Godhead I AM.

When a specific Breathing soul makes a true vow of repentance through prayer, the three in heaven keep a record of it (1 John 5:7)

Then God the Father and God the Son physically come down to earth and dwell in that soul, making an abode with the spirit who already resides in the body because they both agree it is time (1 John 5:8 )

We are in the 1000-year reign, and the battle between angels and demons is taking place on earth in the spirit, and you will soon feel it in your flesh.

1 John 5:7 is a verse from the Bible.

The Father, the Word, and the Holy Spirit are three distinct Spirits who coexist (time is up)

According to 1 John 5:8, there are three witnesses in the earth: the Spirit, the water, and the blood, and these three agree in one.

"The Holy Spirit is God the Father." The water represents man or woman, and the blood represents Jesus Christ, the manifestation of the Holy Spirit.

So, if you deny the existence of Jesus Christ as God manifested in flesh, you are a walking devil, and your father is Satan the Devil, who is fully embodied in your soul, body, and mind, and you will willingly accept the mark of the beast when God pours out his spirit on the entire earth. When the man of sin known as the Son of Perdition Antichrist sits on the throne and declares himself to be God, you will believe the delusion.

https://www.solutionreporters.com/2023/03/05/is-satan-afraid-of-god-why-do-evil-people-not-fear-god/