'Word of the Lord' in the Bible

So death came to Saul because of the sin which he did against the Lord, that is, because of the word of the Lord which he kept not; and because he went for directions to one who had an evil spirit,

Then the word of the Lord came to Gad, David's seer, saying,

Three years when there will not be enough food; or three months of war, when you will go in flight before your haters, being in great danger of the sword; or three days of the sword of the Lord, disease in the land, and the angel of the Lord taking destruction through all the land of Israel. Now give thought to the answer I am to take back to him who sent me.

But the word of the Lord came to me saying, You have taken lives without number and made great wars; I will not let you be the builder of a house for my name, because of the lives you have taken on the earth before my eyes.