It seems doubtful, for one thing, whether we are conditioned so that words have this kind of direct causal power over us.
And as such they have no causal or explanatory power of their own.
If anything else can cause a mind to exist, it must have "equivalent causal powers".
"Equivalent causal powers" is whatever else that could be used to make a mind.
A causal power has the ability to affect something causally.
Third, agents have causal power, and ultimate concerns which they try to fallibly to put into practice.
The verbal statements have causal power because of the desire to not speak falsely.
For a will to be considered "free", we must understand it as capable of affecting causal power without being caused to do so.
To defend this view one has to explain why the causal power of individuals is thus limited.
A primal action which forms an absolute beginning, is beyond the causal power of phenomena.