Satan is a created being (Ezekiel 28:12–17) and, like all created beings, is limited. One such limit is his inability to be everywhere at once (omnipresent). He is, instead, described as moving from place to place (Job 1:7b, 2:2b; 1 Peter 5:8), seeking out people to tempt. He also leaves a place when he is finished to move to another (Luke 4:13). Additionally, he is not in both heaven and earth simultaneously (Job 1:6–7; Revelation 12:9) and is described as ruling within a particular sphere (Ephesians 2:2; 2 Corinthians 4:4).
Omnipresence is a characteristic unique to divinity, so only God is everywhere at once. Of Him we learn that He is in both heaven and Earth at the same time (Psalm 139:7–10) and that He fills all of creation at once (Jeremiah 23:23–24). Conversely, Satan is limited and must delegate work to the other fallen angels to circle the Earth (Matthew 12:24–26; 25:41; Ephesians 6:12).
Movies depict Satan as an almost unstoppable force, one whose power is so potent that we're powerless against him. But like much in Hollywood, that depiction is false. Satan is a created being just as we are. He doesn't have any "omnis"—he isn't omnipotent, omniscient, nor omnipresent. While he is a fierce adversary, He can't overtake us if we resist him (1 Peter 5:8; James 4:7).
Speaking of movies, if Scripture were a film, Satan wouldn't even have the starring role, maybe not even a supporting one. Instead, Scripture focuses on our sin and God's unfolding plan of redemption in Christ. We can't even blame our sin on Satan directly. While he tempts us, sin comes from our own sinful desires which give birth to rebellious acts (James 1:14–15).
God, unlike Satan, is omnipresent (Psalm 139:7–10), and when Jesus returns, every sin we thought was hidden will be made public (Ecclesiastes 12:14). We will all be judged. God will hold Satan accountable, but it will be for his sin, not ours. For our sin, God will hold us accountable—-unless we're covered in Christ's righteousness.
If you have repented and trusted in Jesus’ death as payment for your sin, then God has already punished Jesus and there will be no future punishment for you (Romans 8:1). But if you haven't, you will be cast into the lake of fire (Revelation 20:11–15). Turn to Christ today and be secure for now and eternity. He is your only escape from God’s coming wrath (Romans 5:9)!