Call him over to me. The crowd that tried to silence Bartimaeus, now calls out to him. He's calling to you. Bartimaeus tosses off his coat and springs up and runs to Jesus. Jesus taught that the Father knows what we need even before we ask him.
Prayer is both general and specific.
The prayer to Jesus for mercy opens up all who world of prayer. Jesus wants to hear the specifics of our lives. He wants to hear from us in our own voice what is on our mind and heart. He wants us to verbalize our desires, to say out loud what we want from God. In saying these things out loud, our prayers become concrete and focused.