Matthew 7:18
A good tree cannot bring forth bad fruit: nor yet a bad tree can bring forth good fruit.
1 John 3:9-10
All that are born of God do no sin, for his seed abideth in them, and they cannot sin, because they be born of God.
Galatians 5:17
For the flesh lusteth contrary to the spirit, and the spirit contrary to the flesh. These are contrary one to the other, so that ye cannot do that which ye would.
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 flesh lusteth contrary to the spirit, and the spirit contrary to the flesh. These are contrary one to the other, so that ye cannot do that which ye would.
1 John 3:9
All that are born of God do no sin, for his seed abideth in them, and they cannot sin, because they be born of God.
General references
Luke 6:43
It is not a good tree that bringeth forth evil fruit: Neither is that an evil tree, that bringeth forth good fruit.