Who is the first man in the Bible to mention as receiving the word of the Lord?

Answer:

Adam of course spoke with God, but the exact phrase “the word of the Lord” first appears in reference to Abraham…

Genesis 15:1  After these things the word of the LORD came unto Abram in a vision, saying, Fear not, Abram: I am thy shield, and thy exceeding great reward.

Good question,
Pastor Brad