'Word of Truth' in the Bible

And take not the word of truth utterly out of my mouth, for I have hoped in thine ordinances.

in word of truth, in power of God, through the weapons of righteousness of the right hand and of the left,

Be diligent to present thyself approved to God, an irreproachable workman, correctly traversing the word of truth.

Having deliberated, he begot us by the word of truth for us to be a certain first fruit of his creatures.