Ezekiel 20:20
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.
Cross-reference
In Ezekiel 20:12, God says the same thing: Sabbaths are a sign between Him and Israel. This verse echoes that foundational statement.
Exodus 31:13 uses the exact same 'sign between me and you' language for the Sabbath. This is the key OT source for that idea.
Jeremiah 17:22 commands to 'hallow the sabbath day' and not carry burdens. This reinforces the same call to keep it holy.
Jeremiah 17:24 repeats the condition to hallow the Sabbath by not working. It echoes the same command for obedience.
Exodus 31:13 is the same 'sign' language for the Sabbath. This cross-reference shows the source of Ezekiel's theology.
Joshua 4:6 also uses 'sign' for future generations — the stones memorialize crossing the Jordan, while here Sabbaths are the sign.
Nehemiah 9:14 recalls God making known the holy Sabbath — the same institution that Ezekiel calls a sign between God and Israel.
Isaiah 56:2 blesses those who keep the Sabbath from polluting it — directly parallel to the command to hallow the Sabbath here.
Exodus 20:11 gives the creation basis for the Sabbath: God rested. This connects the sign in Ezekiel to the original institution.
Isaiah 58:13 elaborates 'hallow the Sabbath' by requiring turning away from personal pleasure. This deepens the meaning.
Jeremiah 17:27 warns that failure to hallow the Sabbath brings destruction. This shows the consequence of ignoring Ezekiel's call.
Mark 2:27 offers a different perspective: the Sabbath was made for man — contrasting with the strict hallowing commanded here.
Nehemiah 13:15-22 shows later enforcement of Sabbath holiness by stopping commerce. This applies the command historically.
Romans 4:11 describes circumcision as a sign and seal of righteousness — similar to how the Sabbath here is a sign between God and Israel.