2. Truth is provided to this world by what Means?
Prophets
God used many prophets to deliver His revelations of truth to the world, but He always made sure people could tell if they were from God, or false prophets - by making it so that if they EVER gave a false prophecy (one that did not come true) they were to be stoned, or ignored. So, if someone claims to be a "prophet of the Lord," just check out ALL their prophecies, and if ANY of the predictions never came true, the person is a LIAR and of the DEVIL!
But the prophet, which shall presume
to speak a word in my name, which I have not commanded him to speak, or that
shall speak in the name of other gods, even that prophet shall die. And if thou
say in thine heart, How shall we know the word which the LORD hath not spoken?
When a prophet speaketh in the name of the LORD, if the thing follow not, nor
come to pass, that is the thing which the LORD hath not spoken, but the
prophet hath spoken it presumptuously: thou shalt not be afraid of him.
Deuteronomy 19:20-22
Jesus said, when praying to His Father in heaven, "Sanctify them through thy truth: thy word is truth." John 17:17
Thy word is true from the beginning: and every one of thy righteous judgments endureth for ever. Psalm 119:160
Hear the word of the LORD, O ye nations, and declare it in the isles afar off... Jeremiah 31:10