Matthew 7:18
A good tree is not able to yield evil fruits, nor a bad tree to yield good fruits.
1 John 3:9-10
every one who hath been begotten of God, sin he doth not, because his seed in him doth remain, and he is not able to sin, because of God he hath been begotten.
Galatians 5:17
for the flesh doth desire contrary to the Spirit, and the Spirit contrary to the flesh, and these are opposed one to another, that the things that ye may will -- these ye may not do;
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 doth desire contrary to the Spirit, and the Spirit contrary to the flesh, and these are opposed one to another, that the things that ye may will -- these ye may not do;
1 John 3:9
every one who hath been begotten of God, sin he doth not, because his seed in him doth remain, and he is not able to sin, because of God he hath been begotten.
General references
Luke 6:43
'For there is not a good tree making bad fruit, nor a bad tree making good fruit;