There is nothing in Mark 16:17-18 about binding or loosing.
In my understanding and construction on
BIBLICAL reality and spirituality
that would depend on the understanding one has of the
WHOLE COUNSEL OF SCRIPTURE.
Is not binding and loosing in a spiritual sense part and parcel of an activity taken
WITH and as an agent of HOLY SPIRIT?
Else there would be NO EFECTIVE binding and loosing.
Of course, all such are for those with eyes to see and ears to hear.