The NT references the 'word of God' in a number of places. (for example: Hebrews 4:12-the word of God is alive and exerts power and is sharper than a two-edged sword). It can't be referring to the OT and the Mosaic Law because those authors writing after Jesus's death were trying to put away the old law traditions, and it can't be referring to any of the NT books because many were not even written yet or known to be scripture per se. The WT always uses scriptures that say 'word of God' to mean the moderny day Bible, but what was meant by this phrase at that time?
Thanks.