I puzzle over the adage "to have yout cake and eat it too." If one has cake , why wouldn't they eat it?1 To have your cake and not eat it just seems silly. In the same way, if Christian counselors have the rich theoretical and scientific tradition of psychology to draw upon, why wouldn't they do so? And if the counselor has access to biblical revelation and the theological wisdom of the centuries, of course the counselor should rely on these resources also.
McMinn, Mark R., "An Integration Approach (Chapter 4 of Counseling and Christianity, Five Approaches)" (2012). Faculty Publications - Doctor of Psychology (PsyD) Program. 269.