What does Hutchinson's hymn singing imply causes his lack of success as a missionary?

When Bakha is in distress, Hutchinson notices, but instead of talking with Bakha about what is troubling him, he immediately insists that Bakha come to the church with him, and he uses this time to sing hymns instead of talk with Bakha. Bakha is confused by the content of these songs, but Hutchinson is too caught up in his own religious ecstasy to notice; when Bakha interrupts to ask questions, Hutchinson answers with brief platitudes so that he can get back to his singing. It is clear that he loves his religion, but he is completely unable to communicate the reasons for this love to others--and only marginally aware that it might be necessary.