Al-Hijr 15:99 واعبد ربك حتى ياتيك اليقين ٩٩
وَٱعۡبُدۡ
رَبَّكَ
حَتَّىٰ
يَأۡتِيَكَ
ٱلۡيَقِينُ
٩٩
and worship your Lord until the inevitable1 comes your way.
Read Tafsir
Ibn Kathir (Abridged)
The Command to proclaim the Truth openly
Allah commanded His Messenger to convey what He sent him with, to proclaim and spread the Message, which means confronting the idolators with it. Ibn `Abbas said that the Ayah,
فَاصْدَعْ بِمَا تُؤْمَرُ
(Therefore openly proclaim that what you have been commanded
…The Command to proclaim the Truth openly
Allah commanded His Messenger to convey what He sent him with, to proclaim and spread the Message, which means
…