17 Even so every good tree bringeth forth good fruit; but a corrupt tree bringeth forth evil fruit.
17 Verse 17. So every good tree] As the thorn can only produce
thorns, not grapes; and the thistle, not figs, but
prickles; so an unregenerate heart will produce fruits of
degeneracy. As we perfectly know that a good tree will not
produce bad fruit, and the bad tree will not, cannot produce good
fruit, so we know that the profession of godliness, while the life
is ungodly, is imposture, hypocrisy, and deceit. A man cannot be
a saint and a sinner at the same time. Let us remember, that as
the good tree means a good heart, and the good fruit, a holy life,
and that every heart is naturally vicious; so there is none but
God who can pluck up the vicious tree, create a good heart, plant,
cultivate, water, and make it continually fruitful in
righteousness and true holiness.