1 Samuel 8:6
But the thing displeased Samuel, when they said, Give us a king to judge us. And Samuel prayed unto the Lord.
Cross-reference
1 Samuel 8:5 records the people's demand for a king that directly causes Samuel's displeasure in 8:6.
In 1 Samuel 12:17, Samuel calls down thunder to show the people's wickedness in asking for a king — directly linked to his displeasure here.
In 1 Samuel 15:11, God regrets making Saul king — the outcome of the people's request that displeased Samuel here.
In 1 Samuel 12:12, Samuel later recounts this same demand for a king, reinforcing that they rejected God as king.
In Exodus 32:32, Moses intercedes for the people's sin — Samuel similarly prays to the Lord here over the people's request.
In Numbers 16:22, Moses and Aaron intercede for the congregation — Samuel here prays to the Lord about the people's request, also interceding.
In Ezra 9:3-5, Ezra is appalled by the people's sin and prays — mirroring Samuel's displeasure and prayer here when Israel demands a king.
In Judges 8:23, Gideon refuses kingship, declaring the LORD rules — directly paralleling Samuel's displeasure at Israel's demand for a human king.
Hosea 13:10 echoes Israel's demand 'Give me a king' — directly referencing the same event that displeased Samuel.