HEBREWS 3:7-8 Wherefore (as the Holy Ghost saith, To day if ye will hear his voice, Harden not your hearts, as in the provocation, in the day of temptation in the wilderness:
HEBREWS 3:17-19 But with whom was he grieved forty years? was it not with them that had sinned, whose carcases fell in the wilderness?And to whom sware he that they should not enter into his rest, but to them that believed not? So we see that they could not enter in because of unbelief.
HEBREWS 4:2-3 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 that heard it.For we which have believed do enter into rest, as he said, As I have sworn in my wrath, if they shall enter into my rest: although the works were finished from the foundation of the world.
HEBREWS 4:6-11 Seeing therefore it remaineth that some must enter therein, and they to whom it was first preached entered not in because of unbelief: Again, he limiteth a certain day, saying in David, To day, after so long a time; as it is said, To day if ye will hear his voice, harden not your hearts.For if Jesus had given them rest, then would he not afterward have spoken of another day.There remaineth therefore a rest to the people of God. For he that is entered into his rest, he also hath ceased from his own works, as God did from his.Let us labour therefore to enter into that rest, lest any man fall after the same example of unbelief.
HEBREWS 6:1 Therefore leaving the principles of the doctrine of Christ, let us go on unto perfection; not laying again the foundation of repentance from dead works, and of faith toward God,
HEBREWS 10:22-23 Let us draw near with a true heart in full assurance of faith, having our hearts sprinkled from an evil conscience, and our bodies washed with pure water. Let us hold fast the profession of our faith without wavering; (for he is faithful that promised;)
HEBREWS 10:38-39 Now the just shall live by faith: but if any man draw back, my soul shall have no pleasure in him. But we are not of them who draw back unto perdition; but of them that believe to the saving of the soul.
HEBREWS 11:1 Now faith is the substance of things hoped for, the evidence of things not seen.
HEBREWS 11:2 For by it [faith] the elders obtained a good report.
HEBREWS 11:3 Through faith we understand that the worlds were framed by the word of God, so that things which are seen were not made of things which do appear.
HEBREWS 11:4 By faith Abel offered unto God a more excellent sacrifice than Cain, by which he obtained witness that he was righteous, God testifying of his gifts: and by it he being dead yet speaketh.