I count at least 17 times where miracles help lead to conversions in the book of Acts.The clearest examples are in 9:34-35,40-42.There is no doubt that the working of miracles-signs and wonders-helped bring people to Christ.That is what Luke wants us to see and that is why the Christians prayed for signs and wonders to happen.This raises two questions:1)Why was the prayer for signs and wonders in Acts 4:30 not wicked and adulterous,in view of what Jesus said in Mt.12:39?and 2)Why did the seeking and occurrence of signs and wonders in the missionary effort of the first century Christians not contradict the sufficiency of the gospel as the power of God unto salvation? The answer to the first question comes from the context of Jesus'indictment of sign-seeking.Seeking signs from God is"wicked and adulterous"when the demand for more and more evidence comes from a resistant heart and simply covers up an unwillingness to believe.If we are carrying on a love affair with the world,and our husband,Jesus,after a long separation,comes to us and says,"I love you and I want you back,"one of the best ways to protect our adulterous relationship with the world is to say,"You're not really my husband;you don't really love me.Prove it.Give me some sign."If that's the way we demand a sign,then we are a wicked and adulterous generation.But if we come to God with a heart aching with longing for vindication of his glory and the salvation of sinners,then we are not wicked and adulterous.We are a faithful wife,only wanting to honor our husband.The answer to the second question-the question why signs and wonders need not detract from the power of the gospel-comes from Luke's own explanation of how wonders and the word are related.In Acts 14:3 he says that Paul and Barnabas"remained a long time [in Iconium] speaking boldly for the Lord,who bore witness to the word of his grace,granting signs and wonders to be done by their hands." This is utterly crucial:signs and wonders are God's witness to his word.They are not in competition with the word.They are not against the word.They are not over the word.They are divine witnesses to the value and truth and necessity and centrality of the word(see also Heb.2:4;Mk.16:20).