Perhaps you've heard many good things that lodge members have done. They help children and they have close personal ties to one another. You may have seen their floats, motorcycles and bagpipe bands in parades.
Most lodges require that their members believe in god.
But this god must be acceptable to Christians, Jews, Muslims, etc. Many lodges require a holy book to be present at meetings, but it is the holy book of whatever religion to which its membership subscribes. The lodge chaplain says prayers during a meeting, but no prayer is spoken to the triune God or said in Jesus' name, since this detracts from the universal character of the lodge. Secrecy is another aspect of lodge membership which appeals to many people. They like the idea that they can know something which others cannot know.