This question already has an answer here:
- How can you see words? 1 answer
What is Rabbinic understanding of "the word of YHWH," a phrase first encountered in Hebrew Scripture, in Genesis 15:1 where " the word of YHWH came to Abram in a vision?" Rashi does not address it in this passage where it first appears.
I would have naturally understood this to mean that God spoke, especially because through out subsequent scripture there is a strong connection between this phrase and prophecy; but, it says "the word of YHWH came to Abraham a vision," which implies sight rather than hearing.