13 across: Comfort e.g. for each in part of Divine Office (7) I have S?XPERT, the only word I can find which fits is SEXPERT - for which I need help with parsing, or more likely assistance with my error/s.
Yes, the reference is to Alex Comfort, polymathic author of The Joy of Sex, although I don't think that he would have been happy about being described as a 'sexpert' - he most certainly didn't like the name 'Dr Sex'!
sext1
sɛkst/Submit
noun
a service forming part of the Divine Office of the Western Christian Church, traditionally said (or chanted) at the sixth hour of the day (i.e. noon).