Translation:

88. And call not besides Allah on another god. There is no god but He. Everything (that exists) will perish except His own Face. To him belongs the Command and to him will ye (all) be brought back.

Notes (Tafseer)

3421. This sums up the lesson of the whole Sura. The only Eternal Reality is Allah. The whole phenomenal world is subject to flux and change and will pass away, but He will endure for ever.