John 1:1 In the beginning was the Word, and the Word was with God, and the Word was God. :3 All things were made by him; and without him was not any thing made that was made. :14 And the Word was made flesh, and dwelt among us, (and we beheld his glory, the glory as of the only begotten of the Father,) full of grace and truth.

The seventh day sabbath is the Lord's day.

Mark 2:27 And he said unto them, The sabbath was made for man, and not man for the sabbath: :28 Therefore the Son of man is Lord also of the sabbath. [Isaiah 58:13,14; Rev. 1:10]

Blessed and sanctified by God.

Genesis 2:1 Thus the heavens and the earth were finished, and all the host of them. :2 And on the seventh day God ended his work which he had made; and he rested on the seventh day from all his work which he had made. :3 And God blessed the seventh day, and sanctified it: because that in it he had rested from all his work which God created and made.

Exodus 20:11 For in six days the LORD made heaven and earth, the sea, and all that in them is, and rested the seventh day: wherefore the LORD blessed the sabbath day, and hallowed it.

Exodus 31:13 ... Verily my sabbaths ye shall keep: for it is a sign between me and you throughout your generations; that ye may know that I am the LORD that doth sanctify you.16 Wherefore the children of Israel shall keep the sabbath, to observe the sabbath throughout their generations, for a perpetual covenant.:17 It is a sign between me and the children of Israel for ever: for in six days the LORD made heaven and earth, and on the seventh day he rested, and was refreshed.

Ezekiel 20:12 Moreover also I gave them my sabbaths, to be a sign between me and them, that they might know that I am the LORD that sanctify them. :20 And hallow my sabbaths; and they shall be a sign between me and you, that ye may know that I am the LORD your God. Isaiah 8:16 Bind up the testimony, seal the law among my disciples. :20 To the law and to the testimony: if they speak not according to this word, it is because there is no light in them.

Jesus is our example of how we as Christians should live, which included the sabbath.

Luke 4:14 And Jesus returned in the power of the Spirit into Galilee: and there went out a fame of him through all the region round about. :15 And he taught in their synagogues, being glorified of all. :16 And he came to Nazareth, where he had been brought up: and, as his custom was, he went into the synagogue on the sabbath day, and stood up for to read. Luke 6:5 And he said unto them, That the Son of man is Lord also of the sabbath. :6 And it came to pass also on another sabbath, that he entered into the synagogue and taught: and there was a man whose right hand was withered. Matthew 12:12 … Wherefore it is lawful to do well on the sabbath days.

Yes, the seventh day sabbath is a commandment even after the Jesus' death on the cross.

Luke 23:52 This man went unto Pilate, and begged the body of Jesus. :53 And he took it down, and wrapped it in linen, and laid it in a sepulchre that was hewn in stone, wherein never man before was laid. :54 And that day was the preparation, and the sabbath drew on. :55 And the women also, which came with him from Galilee, followed after, and beheld the sepulchre, and how his body was laid. :56 And they returned, and prepared spices and ointments; and rested the sabbath day according to the commandment.

Yes, Jews and Gentiles besought to hear God's word on the sabbath.

Acts 13:42 And when the Jews were gone out of the synagogue, the Gentiles besought that these words might be preached to them the next sabbath. :43 Now when the congregation was broken up, many of the Jews and religious proselytes followed Paul and Barnabas: who, speaking to them, persuaded them to continue in the grace of God. :44 And the next sabbath day came almost the whole city together to hear the word of God.

Yes, the Lord opened hearts as Paul and other Christians assembled together on the sabbath.

Acts 16:12 And from thence to Philippi, which is the chief city of that part of Macedonia, and a colony: and we were in that city abiding certain days. :13 And on the sabbath we went out of the city by a river side, where prayer was wont to be made; and we sat down, and spake unto the women which resorted thither. :14 And a certain woman named Lydia, a seller of purple, of the city of Thyatira, which worshipped God, heard us: whose heart the Lord opened, that she attended unto the things which were spoken of Paul. :15 And when she was baptized, and her household, she besought us, saying, If ye have judged me to be faithful to the Lord, come into my house, and abide there. And she constrained us.

There will always be faithful gospel believers and those who will not believe the truth.

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. :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. :3 For we which have believed do enter into rest, as he said, As have sworn in my wrath, if they shall enter into my rest: although the works were finished from the foundation of the world. :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. :8 For if Jesus had given them rest, then would he not afterward have spoken of another day. :9 There remaineth herefore a rest to the people of God. :10 For he that is entered into his rest, he also hath ceased from his own works, as God did from his.:11 Let us labour therefore to enter into that rest, lest any man fall after the same example of unbelief.

Hebrews 10:15 And the Holy Spirit also gives us his witness. First he says, :16 "This is the covenant that I will make with them in the days to come, says the Lord: I will put my laws in their hearts and write them on their minds." :17 And then he says, "I will not remember their sins and evil deeds any longer." :23 Let us hold fast the profession of our faith without wavering; (for he is faithful that promised;) :24 And let us consider one another to provoke unto love and to good works: :25 Not forsaking the assembling of ourselves together, as the manner of some is; but exhorting one another: and so much the more, as ye see the day approaching.

The Father is seeking true worshippers.

John 4:23 But the hour cometh, and now is, when the true worshippers shall worship the Father in spirit and in truth: for the Father seeketh such to worship him. :24 God is a Spirit: and they that worship him must worship him in spirit and in truth. 8:31 Then said Jesus to those Jews which believed on him, If ye continue in my word, then are ye my disciples indeed;:32 And ye shall know the truth, and the truth shall make you free.