Luke 4:32

And they were astonished at his doctrine: for his word was with power.
— Luke 4:32, King James Version

In other translations

World English Bible (WEB)

and they were astonished at his teaching, for his word was with authority.

American Standard Version (ASV)

and they were astonished at his teaching; for his word was with authority.

Young's Literal Translation (YLT)

and they were astonished at his teaching, because his word was with authority.