Matthew 7:18
A good tree cannot bear bad fruit, nor a poisonous tree good fruit.
1 John 3:9-10
No one who is a child of God is habitually guilty of sin. A God-given germ of life remains in him, and he cannot habitually sin--because he is a child of God.
Galatians 5:17
For the cravings of the lower nature are opposed to those of the Spirit, and the cravings of the Spirit are opposed to those of the lower nature; because these are antagonistic to each other, so that you cannot do everything to which you are inclined.
Treasury of Scripture Knowledge
Summary
A good tree cannot bring forth evil fruit, neither can a corrupt tree bring forth good fruit.
Cannot
General references
Bible References
Cannot
Galatians 5:17
For the cravings of the lower nature are opposed to those of the Spirit, and the cravings of the Spirit are opposed to those of the lower nature; because these are antagonistic to each other, so that you cannot do everything to which you are inclined.
1 John 3:9
No one who is a child of God is habitually guilty of sin. A God-given germ of life remains in him, and he cannot habitually sin--because he is a child of God.
General references
Luke 6:43
"There is no good tree that yields unsound fruit, nor again any unsound tree that yields good fruit.