The Complete Guide to Interpreting Your Dreams

by Stearn Robinson - Tom Corbett
If you dreamed of committing a sacrilege yourself, you are being warned against the influence of unsavory companions; but if your dream featured sacrilege on the part of others, it indicates a lucky escape from a dangerous situation.

See also Blasphemy, Profanity, Curse, etc.

The Complete Dream Book

by Gillian Holloway
To dream that yon commit sacrilege is a dream that is most ill to all, except it be to sacrifices and prophets, for by custom they receive and divide the first- fruits of oblations, and are always nourished by the gods.