Renewing The Mind
Truth is absolute.  It is fixed and is the same yesterday, today and forever.  It is not a man invented concept.  It is not one thing for one person and something else for another.  It flows forth from a source that is immovable, consistent and absolute.  That source is the Lord God, also referred to as Jehovah, or the Father, of the Bible.  Jesus Christ spoke of the Father when He declared,  "Your  word is truth." (John 17:17)  The Bible also declares, "... in the hope of eternal life, which God, who cannot lie, promised long ages ago." (Titus 1:2)

Truth is also revealed through the Lord Jesus Christ.  It is written concerning Jesus that He is "the Word and the Word was with God, and the Word was God." (John 1:1)  Jesus testifies concerning Himself saying, “I and the Father are one.” (John 10:30)  The Bible further reveals that Jesus Christ "is the radiance of His glory and the exact representation of His nature." (Hebrews 1:3)  Jesus also states that He is God, "“Truly, truly, I say to you, before Abraham was born, I AM.  Therefore they picked up stones to throw at Him.” (John 8:58-59)   "I am" is the name Jehovah gave Himself in the Old Testament of the Bible.  The Bible declares, "God said to Moses, “I AM WHO I AM”
(Exodus 3:14)    Those who picked up the stones to kill Jesus understood the significance of His declaration: "... before Abraham was born, I AM."  Blasphemy was punishable by death.

The Lord Jesus Christ not only reveals truth, He is the truth.  Jesus said, “I am the way, and the truth, and the life; no one comes to the Father but through Me." (John 14:6)  As the embodiment of all truth, His mission was to reveal the truth to all humanity.

Standing before the Roman procurator of Judea,
Pontius Pilate, just prior to His crucifixion,
Jesus stated, “For this I have been born, and
for this I have come into the world, to testify
to the truth. Everyone who is of the truth hears
My voice.” (John 18:37)

Jesus further testifies concerning Himself saying,
“If you continue in My word, then you are truly
disciples of Mine; and you will know the truth,
and the truth will make you free ... So if the Son
makes you free, you will be free indeed. "  
(John 8:31,32,36)

The Holy Spirit also reveals the truth.  Jesus said concerning Him, "When He, the Spirit of truth comes, He will guide you into all the truth; for He will not speak on His own initiative, but whatever He hears, He will speak; and He will disclose to you what is to come. He will glorify Me, for He will take of Mine and will disclose it to you. All things that the Father has are Mine; therefore I said that He takes of Mine and will disclose it to you." (John 16.13-15)

There is only one source of spoken, and consequently, written truth:  Jehovah, the Lord Jesus Christ and the Holy Spirit.  Three distinct individuals, unified in purpose, and yet one God.  The revelation of truth from this one source is recorded in only one location, the Bible.
As a skilled craftsman God brought forth by the word of His mouth all creation.  The Bible states, "In the beginning God  created the heavens and the earth." (Genesis 1:1)  The creation, therefore,  reflects the Creator.  The Psalmist declares, "The heavens are telling of the glory of God; and their expanse is declaring the work of His hands.  Day to day pours forth speech, and night to night reveals knowledge."  (Psalm 19:1-2)  And "since the creation of the world His invisible attributes, His eternal power and divine nature, have been clearly seen, being understood through what has  been made."  (Romans 1:20)

Because creation is an extension of the Creator, truth is
revealed throughout the natural world.  The individual parts and principles of creation are a reflection of the mind of the Creator.  Therefore the natural world shouts forth the absolute and unchangeable laws that God has put in place to govern His creation.  The Bible declares, "Wisdom shouts in the street, she lifts her voice in the square; at the head of the noisy streets she cries out; at the entrance of the gates in the city she utters her sayings."  (Proverbs 1:20-21)  Natural processes, and what are referred to as laws of nature, abound.  Several examples are: the precise movements of galaxies, stars and planets in their orbits; the rotating earth moving precisely in its orbit around the sun; the exact timing of tides; the complexities of animal migration; the regularity of the four seasons; only like species beget like species, the consistency of gravity; the invisible force of the magnetic field; and the incredible mystery of life itself.
The conclusion, when all has been heard, is:  "I want you to ... attain to all the wealth that comes from the full assurance of understanding, resulting in a true knowledge of God’s mystery, that is, Christ Himself, in whom are hidden all the treasures of wisdom and knowledge."  (Colossians 3:1-3) 

There is a raging battle for the mind of man.  The Lord Jesus Christ says, "Come to Me." 
(Matthew 11:28)   But the heart of man "is desperately sick"  (Jeremiah 17:9)  by nature and this "world lies in the power of the evil one."  (1 John 5:19)  Man, therefore, without effort, strays from God's truth.  The Bible declares that man chooses to "exchange the truth of God for The Lie."  (Romans 1:25)  It is as natural is an unattended garden sprouting weeds.  And to the degree someone strays from the truth to that degree he will follow The Lie.