The Gospel of John uses the word "truth" more than any other book in the Bible and way more than the other Gospels combined. Not only that, but many of the most-quoted verses in John, the ones that have shaped Christian discourse over the centuries, have been concerned with the question of truth.
Even before my first cup of coffee, I often turn the radio on to check the weather report for the day: will I need an umbrella? Should I take an extra jacket? Looking around for my coffee cup, I barely hear the voice in the background: "The sun will be darkened; and the moon will not give its light, and the stars will be falling from heaven, and the powers in the heavens will be shaken."