'Word of the Lord' in the Bible

The boy Samuel served the Lord in Eli’s presence. In those days the word of the Lord was rare and prophetic visions were not widespread.

Now Samuel had not yet experienced the Lord, because the word of the Lord had not yet been revealed to him.

Then the word of the Lord came to Samuel,

For rebellion is like the sin of divination,and defiance is like wickedness and idolatry.Because you have rejected the word of the Lord,He has rejected you as king.

Samuel replied to Saul, “I will not return with you. Because you rejected the word of the Lord, the Lord has rejected you from being king over Israel.”