Exodus 31:13
Speak thou also unto the children of Israel, saying, 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.
Cross-references
Exodus 31:17 immediately expands on the sign of the Sabbath, stating it is a perpetual sign between God and Israel, directly continuing the same context.
Exodus 20:8-11 is the original Sabbath commandment, reiterated here as a sign.
In Exodus 16:29, the Sabbath is first given with the manna — the same command for rest and trust in God's provision.
In Exodus 20:10, the Sabbath is commanded in the Decalogue — the same law with detailed prohibitions on work.
In Exodus 35:2, the Sabbath command is repeated with a death penalty — reinforcing its sacredness as a sign.
Leviticus 19:3 pairs Sabbath observance with reverence for parents, echoing the same command.
Leviticus 19:30 links Sabbath keeping with reverence for the sanctuary, reinforcing the sign.
Leviticus 23:3 defines the Sabbath as a holy convocation, adding detail to the command.
Ezekiel 20:20 echoes the same sign language: 'hallow my sabbaths... a sign between me and you, that ye may know that I am the LORD your God.'
Ezekiel 20:12 quotes almost verbatim: '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.'
In Genesis 2:3, God sanctifies the seventh day at creation — the foundation for the Sabbath as a sign of holiness.
In Isaiah 56:2, blessing is promised to those who keep the Sabbath — extending the same command and its significance.
In Isaiah 58:13, the Sabbath is called a delight and holy — deepening the understanding of it as a sign of sanctification.
Jeremiah 17:22 echoes the same Sabbath command, specifically prohibiting carrying burdens, reinforcing the call to hallow the day as God commanded.
Leviticus 25:2 extends the Sabbath principle to the land, a sabbatical year rest.
Nehemiah 9:14 recalls God making known the holy Sabbath through Moses, referencing the same historical giving of the Sabbath command.
Leviticus 26:2 repeats the command to keep sabbaths and reverence the sanctuary, echoing the same 'I am the LORD' formula from Exodus 31:13.
Ezekiel 37:28 says 'I the LORD do sanctify Israel,' resembling the sanctification claim in Exodus 31:13, but tied to God's sanctuary rather than the Sabbath.
Romans 4:11 uses 'sign' language for circumcision as a seal of righteousness, parallel to Sabbath as a sign in Exodus — both are covenant signs.