Matthew 7:18

It is, impossible, for a, good tree, to be bearing, evil fruit, neither doth, a worthless tree, produce, fine fruit.

1 John 3:9-10

Whosoever hath been born of God, is not committing, sin, because, a seed of him, within him, abideth; and he cannot be committing sin, because, of God, hath he been born.

Galatians 5:17

For, the flesh, coveted against the Spirit, but, the Spirit, against the flesh, - for, these, unto one another, are opposed, lest, whatsoever things ye chance to desire, these, ye should be doing!

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, coveted against the Spirit, but, the Spirit, against the flesh, - for, these, unto one another, are opposed, lest, whatsoever things ye chance to desire, these, ye should be doing!
1 John 3:9
Whosoever hath been born of God, is not committing, sin, because, a seed of him, within him, abideth; and he cannot be committing sin, because, of God, hath he been born.

General references

Luke 6:43
For a good tree doth not produce worthless fruit, neither again doth, a worthless tree, produce good fruit.