179 Here δέ (de) has been translated as “then” to indicate the implied sequence of events within the narrative.
180 We have heard it ourselves. The Sanhedrin regarded the answer as convicting Jesus. They saw it as blasphemous to claim such intimacy and shared authority with God, a claim so serious and convicting that no further testimony was needed.
181 Grk “from his own mouth” (an idiom).

In other versions

Then they said, “What further testimony do we need? We have heard it ourselves from his own lips.”

Then they said, “Why do we need any more testimony? We have heard it from his own lips.”

“Why do we need any more testimony,” they said, “since we’ve heard it ourselves from his mouth?”

“Why do we need other witnesses?” they said. “We ourselves heard him say it.”

And they said, “Why do we have need of further testimony? For we ourselves have heard it from his mouth!”

And they said, What need we any further witness? for we ourselves have heard of his own mouth.

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