I try to give my references in each post.  Here is a list of the books I consult most frequently.

Brewer The Dictionary Phrase and Fable (1993 Wordsworth Edition)

Cruden’s Concordance (1930)

Holy Bible: New International Version (NIV)

The Bible Authorized Version (also known as King James Version, because he authorised it)

The Concise Oxford Dictionary of Current English (Seventh Edition 1982)

The Dictionary of Modern Phrase Graeme Donald, (fisrt published 1994)

The Penguin Dictionary of Quotations. J.M. and M.J. Cohen (first published 1960)

The Oxford Dictionary of Phrase, Saying, and Quotation (first published 1997)

Blue Letter Bible