But deliver us from the evil one.
The defining act in the history of the Jews is the Exodus. God delivered the descendants of Jacob from the oppression of the Egyptian Pharaoh: “Our fathers trusted in You; they trusted, and You delivered them” (Psalm 22:4). The word deliverance became a defining biblical idea for God’s saving acts of His people in both the Old and the New Testament.
Just as God delivered the Jews from Pharaoh’s kingdom, so God delivers those who trust in Jesus from the kingdom of Satan to the kingdom of God (Colossians 1:13-14). When Jesus taught His disciples to pray, “But deliver us from the evil one,” He was likely speaking against the backdrop of God being the deliverer of His people. In the New Testament, that idea is affirmed by the apostles in terms of eternal security: Satan will do what he can to prevent us from reaching God’s eternal kingdom but God “will deliver [us] from every evil work and preserve [us] for His heavenly kingdom” (2 Timothy 4:18).
In Christ you are protected from every temporal and eternal desire of “the evil one” to harm you: “The LORD is my rock and my fortress and my deliverer” (2 Samuel 22:2).
There is no devil in the first two chapters of the Bible and no devil in the last two chapters. Thank God for a Book that disposes of the devil!