Teachings by of the spiritual messengers of God are available in selected writings of universal philosophy or the spiritual philosophy of God --
A Rose without Thorns, The Psychic Light
There is also a book called The Book with Wings, which has a cherubim on its cover, holding an ankh, the sign of eternal life, and a great sword (mentioned in Genesis and The Revelation.) The wings of the cherubim were on the ark of the covenant given to Moses.
Also, members of the Association of Universal Philosophy can recieve a newsletter, which is published bi-monthly, "Rays of Philosophy."