Albert Barnes Commentary Psalms 105:27

"They set among them his signs, And wonders in the land of Ham." — Psalms 105:27 (ASV)

They showed his signs among them—literally, “They placed among them the words of his signs.” The margin notes this.

This refers to the miracles performed in Egypt. These miracles brought calamities upon the Egyptians to induce them to allow the children of Israel to leave their bondage. They were the agents in setting these wonders before the Egyptians.

The term words is used here—“the words of his signs”—to convey the idea that this was done by the command of God, or by his word. It was by no power of their own, but only by the authority of God.

And wonders in the land of Ham—Miracles; things that would cause astonishment. See Psalms 105:5.