'Word' in the Bible

For the word of the cross is foolishness to those who are perishing, but to us who are being saved it is the power of God.

For to one is given the word of wisdom through the Spirit, and to another the word of knowledge according to the same Spirit;

Was it from you that the word of God first went forth? Or has it come to you only?

by which also you are saved, if you hold fast the word which I preached to you, unless you believed in vain.