Acts 1-3

When Peter and John walked toward the temple (Acts 3:1) I wonder how God prompted them to act? Verse 2 indicates that thIs wasn't the first time the man had sat at the gate. Surely Jesus had entered by the same gate and had seen this man as well. Who caught their attention; the man, the Holy Spirit, or both? Surely he wasn't the only lame person by the gate that day. There must have been dozens of beggars all along the roads leading to the temple. What was it in this situation that triggered their faith into action? I want to know so that I am not blind to similar opportunities to proclaim Jesus' name. Maybe the man pleaded; "Please give me SOMETHING!" That would match up with Peter's words in verse 6. I need to listen for the same.
Stuart