Sanctify them in the truth; Your word is truth. (John 17:17)
Without the word of God we would know very little about Him or ourselves. We would not know how we got here, the meaning of life, or what happens when we die. Maybe we would speculate that there is a God and understand something of His glory and power by observing what He has created. But without the word of God we can't know Him, His holiness, His righteousness, His grace, mercy, and love. Without the word of God we can't know about the penalty of sin, Judgment, heaven and hell, and the gospel of the Lord Jesus Christ that offers forgiveness of sin and eternal life with Him.
Thankfully, we have the word of God; Grace and peace be multiplied to you in the knowledge of God and of Jesus our Lord; seeing that His divine power has granted to us everything pertaining to life and godliness, through the true knowledge of Him who called us by His own glory and excellence. (2 Peter 1:2-3)
How very foolish it is to ignore, deny, or distort the word of God. We hear ignorant people do this by saying things like, "It is my experience that..." or "I feel that..." or "My truth is...". God's word is truth! It does not just contain some truth, His word is truth! The word of God is not altered by our experiences, feelings or imagined truths that contradict His word. These are all products of a spiritually blind and depraved mind; And just as they did not see fit to acknowledge God any longer, God gave them over to a depraved mind. (Romans 1:28)
God's word is truth! Read it. Hear it. Study it. Trust it. Obey it. Love it; Therefore, putting aside all filthiness, and all that remains of wickedness, in humility receive the word implanted, which is able to save your souls. (James 1: 21)