'Word of the Lord' in the Bible

And the child Samuel ministered to the LORD before Eli. And the word of the LORD was precious in those days; there was no open vision.

Now Samuel did not yet know the LORD, neither was the word of the LORD yet revealed to him.

And the LORD appeared again in Shiloh: for the LORD revealed himself to Samuel in Shiloh by the word of the LORD.

Then came the word of the LORD to Samuel, saying,

For rebellion is as the sin of witchcraft, and stubbornness is as iniquity and idolatry. Because thou hast rejected the word of the LORD, he hath also rejected thee from being king.

And Samuel said to Saul, I will not return with thee: for thou hast rejected the word of the LORD, and the LORD hath rejected thee from being king over Israel.