Hence, my good friends, take heed, lest there be in any of you an evil heart of unbelief [in departing from the living God]. But exhort one another daily while it is called to-day; lest any of you be hardened through the deceitfulness of sin. For ye are made partakers of Christ, if ye hold the beginning of your confidence steadfast unto the end. Therefore, to-day if ye will hear his voice, harden not your hearts, as in the provocation, when he was grieved forty years with that generation, and sware in his wrath, that they should not enter into his rest. Heb. 3. Therefore, my good friends, let us give the more earnest heed to the things which we have heard, lest at any time we should let them slip. For if the word spoken by angels was steadfast, and every transgression and disobedience received a just recompense of reward; how shall we escape, if we neglect so great salvation? 2:1–3. Let us therefore fear the Lord, that we may enter into his rest, and that none of us remain without. For unto us was the Gospel preached, as well as unto them: but the word preached did not profit them, not being mixed with faith in them. 4:1,2. Thus, my good friends, it does not profit to hear the word of God, if it is not mixed with faith; for unto them that believe, as the Scripture says, the kingdom of God is promised by the mouth of Jesus. Hence let us not neglect the grace of God, who says: “I have heard thee in a time accepted, and in the day of salvation have I succored thee: behold, now is the accepted time; behold, now is the day of salvation”--which is neglected by many. Hebrews 12:15; 2 Cor. 6:1,2.
Therefore let us in all things approve ourselves as the ministers of God, serving him all the days of our lives in holiness and righteousness, which are acceptable before him. Hence I say with Paul: Lift up the hands which hang down, and the feeble knees; that ye stumble not, as do the lame; but make straight paths for your feet; for I fear that there are now many lame, and many hands which hang down. Therefore follow peace and holiness, without which no man shall see the Lord. Hebrews 12:12,13. I beseech you therefore, my good friends, by the mercies of God, that ye present your bodies a living sacrifice, holy, acceptable unto God, which is your reasonable service. And be not conformed to this world: but be ye transformed by the renewing of your mind, that ye may prove what is that good, and acceptable, and perfect will of God. Rom. 12:1,2. Hence, remember the words which were formerly spoken to you in the name of the Lord: Therefore abide in that which you have heard from the beginning. If you abide in that which you have heard from the beginning, you shall continue in the Father and in the Son. And this is his promise, even eternal life. 1 John 2:24,25. For we have a sure word of prophecy, whereunto ye do well that ye take heed, as unto a light that shineth in a dark place, until the daystar arise in your hearts. 2 Pet. 1:19.
My dear friends, what a dark place it was formerly with you, when the light was hid from you; and what dark places there are still; but you have obtained mercy. Hence Jesus Christ says in the Gospel: I am come a light into the world, that whosoever believeth on me should not abide in darkness. And if any man hear my words, and believe not, I judge him not: for I came not to judge the world, but to save the world. He that rejecteth me, and receiveth not my words, hath one that judgeth him: the word that I have spoken, the same shall judge him in the last day. For I have not spoken of myself; but the Father which sent me, he gave me a commandment, what I should say, and what I should speak. And I know that his commandment is life everlasting. Jn. 12:46–50.