One of the useful knowledge is knowing the Names and Attributes of Allah (only one God). He is The Ever Preserving. He preserves man’s provision, life, religion and deeds.
On Ashura, 10th of Muharram, Muslims are thankful for God as He saved Prophet Moses and his followers from Pharaoh and his soldiers. Want to know how?
Islam suits all ages and human nature and innate as well. It is God's legislation that respects humans and all creatures spiritually, emotionally and physically as well as at all levels.