'Word' in the Bible

It is not as though the word of God had failed. For not all those who are descended from Israel are truly Israel,

But what does it say? "The word is near you, in your mouth and in your heart" (that is, the word of faith that we preach),

Consequently faith comes from what is heard, and what is heard comes through the preached word of Christ.

For I will not dare to speak of anything except what Christ has accomplished through me in order to bring about the obedience of the Gentiles, by word and deed,