Muller, Incarnation, Immutability, and the Case for Classical Theism:

[Clark] Pinnock militates against interpretation of scriptural divine change or divine repentance as anthropomorphisms on the ground that such interpretation is not guided by the text but by a dogmatic preconception of the immutability of God. Texts referring to divine changelessness are, thus, taken arbitrarily as literal and texts referring to divine changeability, equally arbitrarily, as figurative.

These arguments are far from negligible and their force must not be underestimated — any more than we can afford to under-estimate or ignore the many theologians who contributed to their development.