there certainly is evidence for you in the case of the two armies. one of them fought for the cause of god. the other were disbelievers. the disbelievers appeared to be twice the size of the believers. however god supports through his help whomever he wants. it is a good lesson for the people of true vision.
قد كان لكم آية في فئتين التقتا فئة تقاتل في سبيل الله وأخرى كافرة يرونهم مثليهم رأي العين والله يؤيد بنصره من يشاء إن في ذلك لعبرة لأولي الأبصار