1 John 5:18 (NIV)
18We know that anyone born of God does not continue to sin; the one who was born of God keeps him safe, and the evil one cannot harm him.
1 Peter 5:8-11 (NIV)
8Be self-controlled and alert. Your enemy the devil prowls around like a roaring lion looking for someone to devour.
9Resist him, standing firm in the faith, because you know that your brothers throughout the world are undergoing the same kind of sufferings.
10And the God of all grace, who called you to his eternal glory in Christ, after you have suffered a little while, will himself restore you and make you strong, firm and steadfast.
11To him be the power for ever and ever. Amen.
Psalm 91:14-16 (NIV)
14“Because he loves me,” says the Lord , “I will rescue him; I will protect him, for he acknowledges my name.
15He will call upon me, and I will answer him; I will be with him in trouble, I will deliver him and honor him.
16With long life will I satisfy him and show him my salvation.”