(Al-Ahraf) 7 : 61
قَالَ يَا قَوْمِ لَيْسَ بِي ضَلَالَةٌ وَلَٰكِنِّي رَسُولٌ مِنْ رَبِّ الْعَالَمِينَ
He said: "Oh my people! There is no astray with me, but indeed I am a Messenger from the Lord of the Worlds".
The first Messenger from the Lord of the universe is Noah as explained in verse 4: 163.