Matthew 7:18
A good tree cannot bear bad fruit, nor call a bad tree bear good fruit.
1 John 3:9-10
Whoever hath been born of God doth not commit sin, because his seed abideth in him; and he cannot sin, because he hath been born of God.
Galatians 5:17
For the flesh hath desires against the Spirit, and the Spirit against the flesh; and these oppose one another, that ye may not do the things that 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 hath desires against the Spirit, and the Spirit against the flesh; and these oppose one another, that ye may not do the things that ye would.
1 John 3:9
Whoever hath been born of God doth not commit sin, because his seed abideth in him; and he cannot sin, because he hath been born of God.
General references
Luke 6:43
For there is no good tree that beareth bad fruit; and again, there is no bad tree that beareth good fruit.