Jeremiah 28:9
The prophet which prophesieth of peace, when the word of the prophet shall come to pass, then shall the prophet be known, that the Lord hath truly sent him.
Cross-reference
Jeremiah 4:10 laments that God's people were deceived by false peace promises — a direct example of the problem Jeremiah 28:9 addresses.
Jeremiah 6:14 condemns prophets who say 'Peace, peace' when there is no peace — the exact false prophecy Jeremiah 28:9 warns about.
Jeremiah 8:11 repeats the same condemnation of false peace prophets, reinforcing the test for true prophets in Jeremiah 28:9.
Jeremiah 14:13 reports false prophets promising no sword or famine but assured peace — illustrating the false peace prophecies Jeremiah 28:9 tests.
Deuteronomy 18:22 gives the general test for a true prophet: if the prophecy doesn't come true, it's not from God. Jeremiah 28:9 applies it to peace prophecies.
Ezekiel 13:10 condemns prophets whitewashing a wall and saying 'Peace' when there is none — a parallel indictment of false peace prophecies to Jeremiah 28:9.
Ezekiel 13:16 condemns prophets who falsely prophesied peace to Jerusalem — exactly the kind of false prophecy Jeremiah's test exposes.
In 1 Kings 22:28, Micaiah says if the king returns safely, his prophecy of disaster is false — the opposite test: peace proves the prophet false, while Jeremiah 28:9 peace proves him true.
Ezekiel 33:33 states that when a prophecy comes true, people will know a prophet was among them — the same principle of fulfillment confirming authenticity as in Jeremiah 28:9.
Deuteronomy 13:2 warns that even a true prophecy can come from a false prophet if it leads to idolatry — a contrast to the simple test in Jeremiah 28:9.
Zechariah 2:9 says the fulfillment of a prophecy will prove the prophet is truly sent by God — the same authentication principle as Jeremiah 28:9.