فإن قيل: فيكون فعله الاختياري واجباً أو ممتنعاً
An objection says that if the action or omission is certain according to divine knowledge, voluntary action has become necessary or impossible.
The response is that necessity through an act's being chosen is not the same as the absence of choice. What is certain is the occurrence of the act in the manner in which the person chooses it.
If it is known that someone will freely keep a promise, that knowledge does not remove the person's intention to honor it. Logical implication must not be confused with psychological or practical coercion.