The bow and arrow in symbolism stand for ,respectively, the one pointed attention (aka focus) and thought.

If you read that somebody did use his bow and arrow to do something, it simply means that that person dit it deliberately, by knowing what he/she was doing when it happened. Now it may be for Good or ill , the symbolism is the same.It does not matter if the person did think/care about the consequences of the action, the symbolism is still the same.

From that you can easily understand that the quiver in symbolism is your mind

The Bible is full of such symbolism. You can find some as well in the Bhagavad Gita, the 12 labours of Hercules and many other stories.

The same can be observed in the Sagitarius as well. But that's something that needs from you further reads from the above stories mentioned.

In heraldry bow and arrow,depending of the position in Coat of Arms,can mean,vision,bravery,ambition,fast advancment in ranks.