Surah Ash Shu'ara Tafseer

But we are a host all assembled, amply forewarned.

means, `we are constantly taking precautions lest they betray us.'

Some of the Salaf read this with the meaning,

"we are constantly forewarned and forearmed. And I want to destroy them to the last man, and destroy all their lands and property."

So he and his troops were punished with the very things he sought to inflict upon the Children of Israel.

Allah says:

فَأَخْرَجْنَاهُم مِّن جَنَّاتٍ وَعُيُونٍ