Hebrews 3:12-15

My brothers, take care that there is not by chance in any one of you an evil heart without belief, turning away from the living God: But give comfort to one another every day as long as it is still Today; so that no one among you may be made hard by the deceit of sin: For if we keep the substance of the faith which we had at the start, even till the end, we have a part with Christ; As it is said, Today if you will let his voice come to your ears, be not hard of heart, as when you made him angry.