Add the warm water, sugar, and yeast into the large mixing bowl. Wait 10 minutes to make sure the yeast has been activated.
Knead in the oil, flour, eggs, and salt by hand. Knead for 5 minutes.
Form the dough into a ball or flat disc and cover with plastic wrap. Cover the bowl with a towel. Let the dough rise for 90 minutes.
Preheat the oven to 350ºF.
Cut the dough into two equal pieces. Cut each piece into 3 smaller pieces and roll them between your hands until you have 6 challah strands.
Braid 3 strands into one challah. Repeat for the other 3 strands.
Place the Braided Challah loaves into a loaf pan and brush the top of each with an egg wash.
Bake for 25-30 minutes. If the top of the Challah loaves are not golden brown, bake for an additional 3-4 minutes.