Every Hindu God carries multiple weapons like Trishul, Chakra, Gada, Pharsha, Danda, Sword or Bow. The same god in different Murthis (statue) carries different weapons.
If one weapon is powerful enough to kill the demon, why do gods carry multiple weapons?
I have heard that darshan of these weapons is equally important as each of them bless us with protection, peace, wealth, knowledge, health etc. If it's true I want to know the significance of prominent weapons and the way to worship them.