Luke 3:8

8 Produce fruit in keeping with repentance. And do not begin to say to yourselves, ‘We have Abraham as our father.’ For I tell you that out of these stones God can raise up children for Abraham.

Read Luke 3:8 Using Other Translations

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.
Bear fruits in keeping with repentance. And do not begin to say to yourselves, 'We have Abraham as our father.' For I tell you, God is able from these stones to raise up children for Abraham.
Prove by the way you live that you have repented of your sins and turned to God. Don’t just say to each other, ‘We’re safe, for we are descendants of Abraham.’ That means nothing, for I tell you, God can create children of Abraham from these very stones.

What does Luke 3:8 mean?

John Gill's Exposition of the Bible
Luke 3:8

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 Isaiah 51:2 ) are considered; (See Gill on Matthew 3:9).

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