We do not observe the Sabbath because it passe and obsolete
Not according to scripture:
Isa 66:22 For
as the new heavens and the new earth, which I will make, shall remain before me, saith the LORD, so shall your seed and your name remain.
Isa 66:23 And it shall come to pass, that from one new moon to another, and
from one sabbath to another, shall all flesh come to worship before me, saith the LORD.
Notice in Isaiah 56, speaking of the New and Everlasting Covenant:
“Thus saith the LORD, Keep ye judgment, and do justice: for
my salvation is near
to come, and
my righteousness to
be revealed.” – Isaiah 56:1 KJB
Who is this “salvation” that comes?
“And she shall bring forth a son, and thou shalt call
his name JESUS: for
he shall save his people from their sins.” – Matthew 1:21 KJB
“For
mine eyes have seen thy salvation,” – Luke 2:30 KJB
“And all flesh shall
see the salvation of God.” – Luke 3:6 KJB
What/who is this “righteousness” that is revealed?
“But now
the righteousness of God without the law
is manifested, being witnessed by the law and the prophets;” – Romans 3:21 KJB
“Even
the righteousness of God which is by faith of Jesus Christ unto all and upon all them that believe: for there is no difference:” – Romans 3:22 KJB
Jump to vs 8 of Isaiah 56;
“The Lord GOD
which gathereth the outcasts of Israel saith,
Yet will I gather others to him, beside those that are gathered unto him.” – Isaiah 56:8 KJB
This is cited in the New Testament texts as being fulfilled by Jesus:
“And
other sheep I have, which are not of this fold: them also I must bring, and they shall hear my voice; and there shall be one fold, and one shepherd. ” – John 10:16 KJB
See also: John 21:15-17 KJB, “lambs” (young and spiritually young, babes in Christ), “sheep” (Jewish believers), “sheep” (Gentile believers)
So, Isaiah 56:1,8 KJB are about Jesus Christ in the New Testament, and those who would follow Him.
Let’s go back and look at the immediate context (vss. 2-7) in between those two verses, and see what it says about sabbath keeping in the New Covenant.
“Blessed is
the man that doeth this, and the son of man that layeth hold on it;
that keepeth the sabbath from polluting it, and keepeth his hand from doing any evil.” – Isaiah 56:2 KJB
“Neither let
the son of the stranger, that hath joined himself to the LORD, speak, saying, The LORD hath utterly separated me from his people: neither let the eunuch say, Behold, I am a dry tree.” – Isaiah 56:3 KJB
“For thus saith the LORD unto
the eunuchs that keep my sabbaths, and choose the things that please me, and take hold of
my covenant;” – Isaiah 56:4 KJB
“Even unto them will I give in mine house and within my walls a place and
a name better than of sons and of daughters: I will give them
an everlasting name,
that shall not be cut off.” – Isaiah 56:5 KJB
“Also
the sons of the stranger, that join themselves to the LORD, to serve him, and
to love the name of the LORD, to be his servants,
every one that keepeth the sabbath from polluting it, and
taketh hold of my covenant;” – Isaiah 56:6 KJB
“Even them
will I bring to my holy mountain, and make them joyful in my house of prayer: their burnt offerings and their sacrifices shall be accepted upon mine altar; for
mine house shall be called an house of prayer for all people.”– Isaiah 56:7 KJB
This is fulfilled all throughout Acts; Hebrews 4, etc:
Acts 1:2, 4:24, 13:14,27,42,44, 14:15-16 (17:30), 15:21, 16:13, 17:2, 18:4;
Hebrews 3:11, 4:1,3,4,5,8,9,10,11; [Hebrews 4:9 "rest" Greek: sabbatismos, literal sabbath-keeping]
The many times that the "Sabbath" of the LORD is given in the Old Testament (Genesis to Malachi)
Genesis 2:1-3; (see also,
Genesis 18:19, 26:5, &c.)
The sabbath commandment
in the beginning with God (Genesis 2:1-3; Exodus 20:8-11
; Psalms 119:142).
The sabbath commandment with
Adam (Mark 2:27; Ecclesiastes 12:13-14).
The sabbath commandment with
Enoch (Genesis 5:22,24; Hebrews 11:5; Isaiah 58:13)
The sabbath commandment with
Noah (Genesis 6:9; 2 Peter 2:5; Psalms 119:172).
The sabbath commandment with
Eber (Genesis 10:21,24-25; Exodus 3:18, 5:3, 7:16).
The sabbath commandment with
Abraham (Genesis 17:9, 18:19, 26:5; 2 Chronicles 20:7; Isaiah 41:8; James 2:23; John 15:14).
The sabbath commandment with
Isaac (Genesis 17:9, 18:19, 26:5).
The sabbath commandment with
Jacob/Israel (Genesis 17:9, 18:19, 26:5, 32:28).
The sabbath commandment with
Moses (Exodus 5:4-5;, 16:1-36, 20:8-11; Deuteronomy 5:12-15, 31:12-18). ...
The sabbath commandment with
Jesus (Luke 4:16-19).
The sabbath commandment with the
Apostles/Disciples (Acts 1:2, (4:24), 13:14,27,42,44, (14:15), 15:21, 16:13, 17:2, 18:4; Hebrews 3:11,18, 4:1,3,4,5,8,9,10,11; Revelation 1:10, 10:6, 12:17, 14:6-7)
The sabbath commandment
with us today (Hebrews 4:9; Revelation 12:17, 14:6-7; John 14:15; Exodus 20:6,8-11).
The sabbath commandment
on into eternity (Isaiah 66:23).
Exodus 5:4-5,8-9, 16:23-30, 20:8-11, 23:12, 31:12-18, 34:21, 35:1-3
Leviticus 19:3,30, 23:3,11,15-16,38, 24:8, 26:2
Numbers 15:32, 28:9
Deuteronomy 5:12-15
2 Kings 4:23, 11:5,7,9, 16:18
1 Chronicles 9:32, 23:31
2 Chronicles 2:4, 8:13, 23:4,8, 31:3
Nehemiah 9:6,14, 10:31,33, 13:15-22
Psalms 92:1, 146:6
Isaiah 56:2,4,6, 58:13, 66:23
Jeremiah 17:21-27
Ezekiel 20:12-24, 22:8,26, 23:38, 44:24, 46:1,3-4,12
Amos 8:5
The many times that the "Sabbath" of the LORD is given in the New Testament:
Matthew 12:1,2,5,8,10,11,12, 24:20, 28:1;
Mark 1:21, 2:23,24,27,28, 3:2,4, 6:2, 7:6-9, 15:42, 16:1;
Luke 4:16,31, 6:1,2,5,6,7,9, 13:10,14,15,16, 14:1,3,5, 23:54,56;
John 5:9,10,16,18, 7:22,23, 9:14,16, 12:1 (calculated), 19:31;
Acts 1:2, 13:14,27,42,44, 15:21, 16:13, 17:2, 18:4;
Additional references are:
John 12:1 (six days before the Passover, Jesus was at Lazarus' house, on Sabbath)
Hebrews 3:11, 4:1,3,4,5,8,9,10,11; [Hebrews 4:9 "rest" Greek: sabbatismos, literal sabbath-keeping]
Revelation 1:10 [kuriake hemera, "the Lord's Day" [the 7th Day Sabbath, not "the Day of the Lord", this is totally different in the Greek], see Genesis 2:1-3, Exodus 20:8-11, Deuteronomy 5:12:15, Isaiah 58:13, 66:23, Matthew 12:8, Mark 2:27,28; Luke 6:5 ],
Revelation 10:6 [see also Exodus 20:11, 31:17; Nehemiah 9:6; Psalms 146:6; Acts 4:24, 14:15, Revelation 14:7];
Revelation 14:7 [see previous], etc
Additionally, further references in the Greek are [every single 'first [day] of the week' text, as each text clearly shows that the first day is simply a number, with no special association or designation, other than it is simply one day toward the culmination of the week, being the 7th Day the Sabbath of the LORD thy God]:
Genesis 1:5 (Masoretes Hebrew) יום אחד׃ (Transliterated) yôm echäd f
Matthew 28:1(a) - (Koine Greek) οψε δε σαββατων (Transliterated) oye de sabbatwn
Matthew 28:1(b) - (Koine Greek) εις μιαν σαββατων (Transliterated) eiV mian sabbatwn
Mark 16:2 - (Koine Greek) και λιαν πρωι της μιας σαββατων (Transliterated) kai lian prwi ths mias sabbatwn
Mark 16:9 - (Koine Greek) αναστας δε πρωι πρωτη σαββατου (Transliterated) anastas de prwi prwth sabbatou
Luke 24:1 - (Koine Greek) τη δε μια των σαββατων (Transliterated) th de mia twn sabbatwn
John 20:1 - (Koine Greek) τη δε μια των σαββατων (Transliterated) th de mia twn sabbatwn
John 20:19 - (Koine Greek) τη μια των σαββατων (Transliterated) th mia twn sabbatwn
Acts 20:7 - (Koine Greek) εν δε τη μια των σαββατων (Transliterated) en de th mia twn sabbatwn
1 Corinthians 16:2 - (Koine Greek) κατα μιαν σαββατων (Transliterated) kata mian sabbatwn
That the Sabbath [of the Lord thy God], [being] the 7th day, is always the culmination of the week in God's Created order and is always referred to as such in all of scripture.
Therefore, every single “first [day] of the week” text upholds the 7th Day Sabbath, and is undeniable evidence of its continued existence and prominence.
The body of believers may gather on any and every day with no injunction anywhere found in scripture against such, and in truth they met "daily", "continually", etc (Mat 26:55; Mar 14:49; Luk 22:53, 24:33,36; Acts 19:9) and likewise among the followers of Jesus Christ (Luk 24:51,53; Acts 1:3,9, 2:46-47, 5:42, 6:1, 16:5, 17:11,17; Heb 3:13, etc), but not every day is the sabbath of the LORD.