If a man abide not in me, he is cast forth as a branch, and is withered; and men gather them, and cast them into the fire, and they are burned.
Jesus addressed what could happen to a believer that gets out of touch with Him. Through carelessness and prayerlessness, they no longer abide and bear fruit. As a result, they commit some sin and ruin their testimony. When we fail to abide in Christ, we will suffer the consequences.