Judges 3:27
And it came to pass, when he was come, that he blew a trumpet in the mountain of Ephraim, and the children of Israel went down with him from the mount, and he before them.
Cross-reference
Judges 6:34
Parallel
In Judges 6:34, Gideon also blows a trumpet to summon troops, directly mirroring Ehud's call to arms.
Judges 7:24
Parallel
In Judges 7:24, Gideon summons Ephraim to battle, exactly as Ehud did, showing a recurring pattern.
1 Samuel 13:3
Parallel
In 1 Samuel 13:3, Saul blows a trumpet to summon Israel after Jonathan's attack, parallel to Ehud's trumpet call.
2 Samuel 20:1
Contrast
2 Samuel 20:1 describes Sheba sounding a trumpet to rally rebels—same action but opposite purpose (rebellion vs deliverance).
2 Samuel 20:22
Parallel
In 2 Samuel 20:22, Joab blows a trumpet to disperse troops after victory, a parallel use of trumpet as military signal.