(Heb 2:1 KJV) Therefore we ought to give the more earnest heed to the things which we have heard, lest at any time we should let them slip.
It’s not enough just to hear. We are to give the more earnest heed to what we have heard, lest they slip away from us. What does it mean to give earnest heed, pay careful attention? It means to really consider and make them part of our life. If we don’t, they will slip from us; not a sudden deliberate decision, but simply slipping away, drifting, unnoticed because of the rush of life and other things. Pay careful attention to hear and know about God and His ways. Then, make a conscious effort to make them part of your life.