The rest of Christians is attained by faith.
Hebrews 4:1 Let us therefore fear, lest at any time, although there is left behind a promise of entering into his rest,any one from amongst you should be deemed, to have come short; Hebrews 4:2 For we have had delivered to us the joyful message, just as even, they; but the word which was heard did not profit them, they not having been blended, by faith, with the things heard. Hebrews 4:3 For we who have believed, are to enter into the rest, according as he hath saidSo I sware in mine anger, They shall not enter into my rest; And yet, the works, from the foundation of the world, had been brought into existence, Hebrews 4:4 For he hath spoken, somewhere, concerning the seventh [day], thusAnd God rested, on the seventh day, from all his works; Hebrews 4:5 And in this againThey shall not enter into my rest. Hebrews 4:6 Seeing, therefore, that it is left over for, some, to enter into it, and, they who formerly had delivered to them the joyful message, entered not in by reason of obstinacy, Hebrews 4:7 Again, he marketh out a certain day, Today, in David, sayingafter so long a time as this,according as it hath been said before:Today, if, unto his voice, ye would hearken, do not harden your hearts. Hebrews 4:8 For, if, unto them, Joshua had given rest, it had not in that case, concerning another day, been speaking, after, these things. Hebrews 4:9 Hence there is, left over, a Sabbath-keeping, for the people of God. Hebrews 4:10 For, he that hath entered into his rest, He too, hath rested from his works, just as, from his own, God, [rested]. Hebrews 4:11 Let us, therefore, give diligence to enter into that rest, lest anyone fall into the same example, of obstinacy.
The power of God's Word.
Hebrews 4:12 For, living, is the word of God, and, energetic, and more cutting than any knife with two edges, and penetrating as far as a dividing asunder of soul and spirit, of joints also, and marrow, and able to judge the impulses and designs of the heart; Hebrews 4:13 And there is, no created thing, can be secreted before him, but, all things, are naked and exposed to his eyes:as to whom is, our discourse.
By our high priest Jesus the Son of God, subject to infirmities, but not sin,
Hebrews 4:14 Having then a great high-priest who hath passed through the heavens, Jesus the Son of God, let us hold fast the confession; Hebrews 4:15 For we have not a high-priest unable to have fellow-feeling with our weaknesses, but one tested in all respects, by way of likeness, apart from sin.
we must and may go boldly to the throne of grace.
Hebrews 4:16 Let us, then, be approaching with freedom of speech, unto the throne of favour, that we may receive mercy, and, favour, may find, for seasonable succour.