The first day of the week is NOT the Sabbath. Nothing in Scripture moves Sabbath keeping from Saturday to Sunday.
Romans 14:5 One man esteemeth one day above another: another esteemeth every day [alike]. Let every man be fully persuaded in his own mind.
Colossians 2:16 Let no man therefore judge you in meat, or in drink, or in respect of an holyday, or of the new moon, or of the sabbath [days]: 2:17 Which are a shadow of things to come ; but the body [is] of Christ.
In Christ we have entered into a permanent Sabbath rest that the Sabbath of Israel typified under the old dispensation. As such, we are no longer bound to keeping a ceremonial Sabbath on the seventh day. All days can be kept the same for a Christian who so desires.
Hebrews
4:1 Let us therefore fear , lest, a promise being left [us] of entering into his rest, any of you should seem to come short of it. 4:2 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]. 4:3 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. 4:4 For he spake in a certain place of the seventh [day] on this wise, And God did rest the seventh day from all his works. 4:5 And in this [place] again, If they shall enter into my rest. 4:6 Seeing therefore it remaineth that some must enter therein , and they to whom it was first preached entered not in because of unbelief: 4:7 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. 4:8 For if Jesus (Joshua) had given them rest , then would he not afterward have spoken of another day. 4:9 There remaineth therefore a rest to the people of God. 4:10 For he that is entered into his rest, he also hath ceased from his own works, as God [did] from his. 4:11 Let us labour therefore to enter into that rest, lest any man fall after the same example of unbelief.
If you attempt to make this text mean that Sabbath or Sunday observation is required of the Christian as many do you have to ignore and misapply much of it. It is clearly talking about a rest that the Christian enters into in Christ, and not a rest we enter into on one day of the week. It also points back to the Sabbath to show how it typified Christ, and how that a Sabbath rest remains for us, but of a different and more wonderful sort. Verses 4-8 are referring to the seventh day Sabbath that was given Israel (Joshua had given them rest), and it clearly indicates that it pointed to Christ, who was the other day spoken of.
Verse 6 is astounding in that it makes clear to us that Israel (physical not spiritual) did not actually enter into the Sabbath rest of Christ no matter how many times they properly observed the Sabbath according to the law.
Sabbatarianism (treating Sunday like the Sabbath) is no different than keeping a seventh day Sabbath. Neither have a sure foundation in scripture.
Romans 14:5 One man esteemeth one day above another: another esteemeth every day [alike]. Let every man be fully persuaded in his own mind.
Colossians 2:16 Let no man therefore judge you in meat, or in drink, or in respect of an holyday, or of the new moon, or of the sabbath [days]: 2:17 Which are a shadow of things to come ; but the body [is] of Christ.
In Christ we have entered into a permanent Sabbath rest that the Sabbath of Israel typified under the old dispensation. As such, we are no longer bound to keeping a ceremonial Sabbath on the seventh day. All days can be kept the same for a Christian who so desires.
Hebrews
4:1 Let us therefore fear , lest, a promise being left [us] of entering into his rest, any of you should seem to come short of it. 4:2 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]. 4:3 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. 4:4 For he spake in a certain place of the seventh [day] on this wise, And God did rest the seventh day from all his works. 4:5 And in this [place] again, If they shall enter into my rest. 4:6 Seeing therefore it remaineth that some must enter therein , and they to whom it was first preached entered not in because of unbelief: 4:7 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. 4:8 For if Jesus (Joshua) had given them rest , then would he not afterward have spoken of another day. 4:9 There remaineth therefore a rest to the people of God. 4:10 For he that is entered into his rest, he also hath ceased from his own works, as God [did] from his. 4:11 Let us labour therefore to enter into that rest, lest any man fall after the same example of unbelief.
If you attempt to make this text mean that Sabbath or Sunday observation is required of the Christian as many do you have to ignore and misapply much of it. It is clearly talking about a rest that the Christian enters into in Christ, and not a rest we enter into on one day of the week. It also points back to the Sabbath to show how it typified Christ, and how that a Sabbath rest remains for us, but of a different and more wonderful sort. Verses 4-8 are referring to the seventh day Sabbath that was given Israel (Joshua had given them rest), and it clearly indicates that it pointed to Christ, who was the other day spoken of.
Verse 6 is astounding in that it makes clear to us that Israel (physical not spiritual) did not actually enter into the Sabbath rest of Christ no matter how many times they properly observed the Sabbath according to the law.
Sabbatarianism (treating Sunday like the Sabbath) is no different than keeping a seventh day Sabbath. Neither have a sure foundation in scripture.