Sacrilege dream meaning is explained below using 2 different sources. Each interpretation is shown with its source.

Interpretation 1 — 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.

Source: The Complete Guide to Interpreting Your Dreams Author: Stearn Robinson - Tom Corbett

Interpretation 2 — 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.
Source: The Complete Dream Book Author: Gillian Holloway