Ezekiel 16:57
Before thy wickedness was discovered, as at the time of thy reproach of the daughters of Syria, and all that are round about her, the daughters of the Philistines, which despise thee round about.
Cross-reference
Ezekiel 16:27 already mentions daughters of Philistines as enemies—same allegory, directly reinforces the reproach.
Ezekiel 16:37 describes God stripping Jerusalem naked before her lovers — the same uncovering of shame referenced in verse 57.
Ezekiel 23:18 tells of whoring openly and flaunting nakedness — the same public shame as the uncovered wickedness in verse 57.
Ezekiel 21:24 says you have made your iniquity remembered — directly parallels the exposure of wickedness in verse 57.
2 Chronicles 28:18-23 details Philistine invasions of Judah—directly illustrates the hostility of the daughters of Philistines in Ezekiel.
Isaiah 7:1 records the Syrian-Israelite coalition against Jerusalem—the same adversarial context as the daughters of Syria.
Hosea 2:10 says God will uncover lewdness in sight of lovers — identical imagery to the shame in verse 57.
2 Chronicles 28:5 recounts Syria's victory over Judah under Ahaz—historical basis for the reproach from Syria mentioned here.