Preheat oven to 350 degrees and line a baking sheet with parchment paper.
In a large bowl, whisk together both flours, ginger, and cinnamon.
Using a wooden spoon, mix eggs, molasses, and water into flour mixture until combined.
On a lightly floured surface, knead dough a couple times by hand until it all comes together. Roll dough out to about ¼" thickness and cut shapes out with cookie cutters. Gather any leftover dough, knead together, roll out again, and cut out more cookies.
Place cookies on prepared baking sheet about 1-inch apart. Bake for 10-12 minutes, until they're just starting to turn golden at edges. Let cool on baking sheet for a couple minutes before removing to wire racks to cool completely.