Surah An-Nahl 16:51

۞ وَقَالَ ٱللَّهُ لَا تَتَّخِذُوٓا۟ إِلَـٰهَيْنِ ٱثْنَيْنِ ۖ إِنَّمَا هُوَ إِلَـٰهٌ وَٰحِدٌ ۖ فَإِيَّـٰىَ فَٱرْهَبُونِ

And Allāh has said, "Do not take for yourselves two deities. He [i.e., Allāh] is but one God, so fear only Me."

Translation: Saheeh International

Tafsir

And God has said ‘Do not choose two gods ithnayn is for emphasis. Truly there is only One God — He has added this statement to affirm His Divinity and Oneness — so be in awe of Me alone’ fear Me to the exclusion of anyone else — herein is a shift from the third person to the first.

Excerpt from Tafsir al-Jalalayn, commentary on 16:51, via Quran.com. The reader has the full commentary and 9 more tafsirs.