The “horn” is widely taken as an image of visible power or status. Lifting it “on high” stresses public display—projecting strength in a way meant to dominate or intimidate. “Stiff neck” reads as an established image for refusing to yield, so the focus is not posture but a hard, uncorrectable stance that comes out in speech.

Where interpretation differs

A main question is who is speaking the warning. Some read it as the psalmist (or a worship leader) addressing the proud within the community. Others read it as God speaking through the psalm, since the larger psalm emphasizes God’s control over bringing down the proud and raising others.

Another smaller difference is how to shade the horn image: some hear it mainly as personal pride and self-exaltation; others hear a stronger note of aggressive domination—using power to push others down.

Why the disagreement exists The passage uses first-person speech (“I said…”) without explicitly naming the speaker in these two verses. The broader psalm context about God’s judging and leveling social power makes both readings (human speaker vs. divine voice conveyed in worship) plausible. Also, “horn” is a flexible ancient symbol that can point to strength, honor, rank, or force.

What this passage clearly contributes Explicitly, it portrays boasting, self-exaltation, and defiant talk as marks of the arrogant/wicked and treats them as behavior that must stop. By repeating “do not lift up the horn,” it highlights how pride seeks visibility (“on high”). The lines also frame pride as something expressed in speech, not just internal attitude. Within Psalm 75’s flow, these warnings prepare for the theme that human self-promotion is unstable because God can reverse power and status (see the movement toward God’s leveling work in the rest of the psalm, e.g., Psalm 75:6).