3 verses have
heavens
in Edition Clear Qur'an by Talal Itani / Al-Kahf (The Cave)

18:14And We strengthened their hearts, when they stood up and said, “Our Lord is the Lord of the heavens and the earth; we will not call on any god besides Him, for then we would have spoken an outrage.”

18:26Say, “God knows best how long they stayed.” His is the mystery of the heavens and the earth. By Him you see and hear. They have no guardian apart from Him, and He shares His Sovereignty with no one.

18:51I did not call them to witness the creation of the heavens and the earth, nor their own creation; and I do not take the misleaders for assistants.