Matthew 7:18

A good tree cannot bring forth evil fruit, neither can a corrupt tree bring forth good fruit.

1 John 3:9-10

Whosoever is born of God does not commit sin; for his seed remains in him; and he cannot sin, because he is born of God.

Galatians 5:17

For the flesh lusts against the Spirit, and the Spirit against the flesh; and these are contrary the one to the other, so that ye cannot 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.

General references

Bible References

Cannot

Galatians 5:17
For the flesh lusts against the Spirit, and the Spirit against the flesh; and these are contrary the one to the other, so that ye cannot do the things that ye would.
1 John 3:9
Whosoever is born of God does not commit sin; for his seed remains in him; and he cannot sin, because he is born of God.

General references

Luke 6:43
For a good tree does not bring forth corrupt fruit; neither does a corrupt tree bring forth good fruit.