“He must pass through the sea with distress;
And in the sea he will strike down the waves;
All the depths of the Nile will dry up.
The pride of Assyria will be brought down,
And the scepter of Egypt will depart.”
~Zechariah 10:11

When this prophecy was written, many centuries had passed since Jehovah had liberated the Israelites from Egypt or since Assyria as an empire posed a threat to his people.
In the past, God’s people had sometimes relied on alliances with those nations and placed their faith on their false gods instead of relying 100% on Jehovah.
Jehovah is telling his people that he will bring them back to true worship and free them from the false practices of neighboring nations.
Today, God’s people have also been freed from the practices of false religion and have found a safe way out of Satan’s world. (Is. 11:16)