Heb. 2:1 So we must listen very carefully to the truth we have heard, or we may drift away from it.
Listening very carefully to the truth is good soul protection. But, just listening to truth is not enough. We can hear the truth, learn it well, and even proclaim it well, but if we don't embrace the truth from our hearts, it is to no avail. Many people drift away from the truth because they never allow the truth to change their heart. We can even convince ourselves that we are living in the truth when in reality the truth is not living in us.
The only way truth can make any difference at all in our lives is through our personal relationship with Him who is Truth. Jesus is truth personified. He is the only one who can take the written Word and make it the living Word. It is not enough to know the truth; we must know Him who is the Truth as well. Knowing about Jesus is not the same as knowing Him. Hell will be full of people who listened well to the truth but who never really knew the Truth.
The only way to know Christ is through a personal commitment to Him at the cross. We must come to Him with our sins, confess them, seek His forgiveness, and embrace His forgiveness. We must give Him permission to come into our hearts and clean house. We must let Him change us and redirect our lives into lives of service for Him.
When we let Jesus take over our lives, we won't drift away from Him. It is when we wrestle with Him over control that we stumble and fall. As long as you try to control your life you will drift away from the Lord. He will not force you to listen or submit to Him.
Are you listening carefully to the truth you have heard from Him?