Holy Writ vs Word of God

Holy Writ and Word of God both are nouns.

Word	Noun	Adjective	Verb	Adverb
Holy Writ	Yes	No	No	No
Word of God	Yes	No	No	No

As nouns, Holy Writ and Word of God are synonyms defined as:

Holy Writ and Word of God: the sacred writings of the Christian religions

Other synonyms of Holy Writ include Bible, Book, Christian Bible, Good Book, Holy Scripture, Scripture, Word.

Holy Writ (noun)	Word of God (noun)
the sacred writings of the Christian religions	the sacred writings of the Christian religions
	the message of the Gospel of Christ
	a manifestation of the mind and will of God