It is a pretentious and potentially dangerous mindset, in my opinion, to assume to be God’s tool, doing supposedly God’s will.
It’s not dangerous at all if you believe this.
There is only one God and if you love him and you love your neighbor as yourself you are not going to run around murdering others thinking you are doing his will.
However, people who think they are providentially "sent" to change the world or do something "in the name of God" have done many good things but also quite a bit of damage in the past.
Extremely important and well stated point!