<p>2:37- see on Acts 2:12.</p><p><i>Now when they heard this, they were pricked in their heart</i><i>- </i>The NT emphasizes the power of the cross, and the horrendous fact that we are really asked to share in His sufferings (e.g. Acts 9:16; 2 Cor. 1:5; Phil. 1:29; 3:10; 2 Tim. 2:3; 1 Pet. 4:1,13; Rev. 2:10). The Acts record seems to bring out how the Lord's people shared in the Lord's mortal experiences (e.g. Acts 4:7 = Mt. 21:23,24). The early converts were &quot;pricked&quot; (Acts 2:37), using the same word as in Jn. 19:34 for the piercing of the Lord's side. Paul speaks of how in his refusing of payment from Corinth, &ldquo;I made myself servant unto all&quot;, just as the Lord was on the cross. In accommodating himself to his audience, &ldquo;to the weak became I as weak&quot;, just as the Lord was crucified through weakness. In our preaching and in our ecclesial lives, we articulate elements of the Lord&rsquo;s cross in our attitude to others.</p><p><i>And said to Peter and the rest of the apostles: Brothers, what shall we do?</i>- Luke is fond of using this Greek phrase in recording the response provoked by encounters with the Lord Jesus and the message about Him (Lk. 3:10,12,14; 6:11; 10:25; 12:17; 16:3,4; 18:18; 19:48; 23:34; Acts 4:16; 9:6; 10:6; 16:30; 22:10). This is therefore a most significant phrase for Luke. His preaching of the Gospel (for Luke-Acts are missionary documents) was to provoke this question in us too- what shall we do?</p>