2 verses have
doubt
in Edition Clear Qur'an by Talal Itani / Saba (Sheba)

34:21He had no authority over them; except that We willed to distinguish him who believes in the Hereafter, from him who is doubtful about it. Your Lord is Guardian over all things.

34:54A barrier will be placed between them and what they desire, as was done formerly with their counterparts. They were in disturbing doubt.