1 Samuel 17:30

And he turned from him toward another, and spake after the same manner: and the people answered him again after the former manner.

Cross-reference

1 Samuel 17:26 is the earlier speech David repeats here — the same words about the reward for killing Goliath.

1 Samuel 17:27 records the people's response to David's question — the answer he hears and then repeats.