The obvious and superficial thing to say is that his religion was but an official one, a tribute to custom and opinion.

But it was not so.

Both in his philosophical thinking, and in the feelings of his mind in the various accidents and occasions of life, Bacon was a religious man, with a serious and genuine religion.

His sense of the truth and greatness of religion was as real as his sense of the truth and greatness of nature; they were interlaced together, and could not be separated, though they were to be studied separately and independently.

The call, repeated through all his works from the earliest to the last, _Da Fidel quae Fidel sunt_, was a warning against confusing the two, but was an earnest recognition of the claims of each.
The solemn religious words in which his prefaces and general statements often wind up with thanksgiving and hope and prayer, are no mere words of course; they breathe the spirit of the deepest conviction.