Rev. Hanson, in August of 2006 wrote "An Open Letter to Jewish, Muslim, and Christian Leaders" in which he said, "(t)he one God whom we worship is a God not only of judgment, but of mercy and peace." Hanson goes on to say, "(i)t is time for us together to publicly, clearly, and courageously give witness that the One in whom we believe unites us in our diversity rather than divides us in our hostilities."
The god of Islam and the God of Christianity are not the same god. See this article for some reasoning behind why I believe this is so.
This is another example of where the leadership of the ELCA is wrong and leading their membership down a path of disregard for scripture, truth and God Himself.