In a large mixing bowl, stir together honey and 1/2 cup of the lukewarm water. Add yeast and stir to dissolve. Let stand until foamy, about 5 minutes. Stir in remaining 1 1/2 cups lukewarm water.
Stir in the whole wheat flour, 1 1/2 cups of white flour and salt. Stir until well combined. Keep adding the rest of the white flour until dough leaves sides of bowl.
Sprinkle flour on a clean counter or flat dry surface. Turn dough onto the surface and knead 5 to 10 minutes, adding more flour if needed, until the dough is smooth and elastic. Be sure not to add too much flour.
Lightly oil a large mixing bowl. Place dough in bowl and turn to coat. Cover with damp cloth and set aside in warm place to rise until doubled in bulk, about 1 1/2 hours-2 hours. Place a piece of parchment paper on a large baking sheet.
Punch the dough down and dump it on to floured surface. Gently knead the raisins and walnuts into the dough. Shape (round, long, square,) into 1 large loaf and place on prepared baking sheet. Cover with damp cloth and let rise in a warm, draft free area of your house until almost doubled, about 30 minutes.
Preheat oven to 425°F. Using a spray bottle spray loaf with water. Bake 15 minutes. Reduce oven temperature to 375°F and bake 30 minutes or until nicely browned. Cool on rack before slicing.