Signs and the walking of miracles encourages us, it shouldn't be lacking in the church. Imagine if Eutychus had stayed dead, a man who came to hear The Word of God and then fell and died, it would have soiled the message preached. But thank God for the power to hea present always.

See vs 12

They took the boy [Eutychus] home alive, and were greatly comforted and encouraged.

It encouraged them, it comforted them, may God help us