Bring forth therefore fruits worthy of repentance,.... Or "meet" for it, such as will show it to be true and genuine: "and begin not to say within yourselves": in one of Beza's copies, and in another of Stephens's, it was read, "think not", as in Matthew 3:9. the sense is the same. The Vulgate Latin and Ethiopic versions, leave out the phrase, "within yourselves": what they are forbid to say follows,

we have Abraham to our father, for I say unto you, God is able of these stones to raise up children unto Abraham; which need not be thought strange, when the creation of Adam out of the earth, and the production of such a numerous offspring, as the Israelites were, from Abraham and Sarah, when past all hope of children, and are signified by the rock and pit in Isaiah 51:1 are considered; See Gill on Matthew 3:9.

Fruits (καρποὺς)

Matthew has the singular number, καρπὸν, fruit.

Repentance (τῆς μετανοίας)

Note the article: the repentance which you profess in coming to my baptism. Rev., in margin, "your repentance." See on Matthew 3:2.

Begin

With the first accusing of your conscience. "He anticipates even attempt at excuse" (Bengel). Matthew has think not, indicating a delusive fancy.

Father

The word stands first in the sentence, "We have Abraham to our father," and is therefore emphatic, and with reason; for it was on their descent that the answer of these Jews to John's rebuke turned: "Our father is Abraham."

These stones

See on Matthew 3:9.

Bring forth therefore fruits worthy of repentance, and begin not to say within yourselves, We have Abraham to our father: for I say unto you, That God is able of these stones to raise up children unto Abraham.

3:8 Say not within yourselves, We have Abraham to our father - That is, trust not in your being members of the visible Church, or in any external privileges whatsoever: for God now requires a change of heart; and that without delay.

worthy of: or, meet for

3:1-14 The scope and design of John's ministry were, to bring the people from their sins, and to their Saviour. He came preaching, not a sect, or party, but a profession; the sign or ceremony was washing with water. By the words here used John preached the necessity of repentance, in order to the remission of sins, and that the baptism of water was an outward sign of that inward cleansing and renewal of heart, which attend, or are the effects of true repentance, as well as a profession of it. Here is the fulfilling of the Scriptures, Isa 40:3, in the ministry of John. When way is made for the gospel into the heart, by taking down high thoughts, and bringing them into obedience to Christ, by levelling the soul, and removing all that hinders us in the way of Christ and his grace, then preparation is made to welcome the salvation of God. Here are general warnings and exhortations which John gave. The guilty, corrupted race of mankind is become a generation of vipers; hateful to God, and hating one another. There is no way of fleeing from the wrath to come, but by repentance; and by the change of our way the change of our mind must be shown. If we are not really holy, both in heart and life, our profession of religion and relation to God and his church, will stand us in no stead at all; the sorer will our destruction be, if we do not bring forth fruits meet for repentance. John the Baptist gave instructions to several sorts of persons. Those that profess and promise repentance, must show it by reformation, according to their places and conditions. The gospel requires mercy, not sacrifice; and its design is, to engage us to do all the good we can, and to be just to all men. And the same principle which leads men to forego unjust gain, leads to restore that which is gained by wrong. John tells the soldiers their duty. Men should be cautioned against the temptations of their employments. These answers declared the present duty of the inquirers, and at once formed a test of their sincerity. As none can or will accept Christ's salvation without true repentance, so the evidence and effects of this repentance are here marked out.