مُّطَـعٍ ثَمَّ
Obeyed there,
meaning, he has prestige, his word is listened to, and he is obeyed among the most high gathering (of angels).
Qatadah said,
مُّطَـعٍ ثَمَّ
(Obeyed there)
"This means in the heavens. He is not one of the lower ranking (ordinary) angels. Rather he is from the high ranking, prestigious angels. He is respected and has been chosen for (the delivery of) this magnificent Message."
Allah then says,
أَمِينٌ
trustworthy.
This is a description of Jibril as being trustworthy. This is something very great, that the Almighty Lord has commended His servant and angelic Messenger, Jibril, just as He has commended His servant and human Messenger, Muhammad by His statement,
وَمَا صَاحِبُكُم بِمَجْنُونٍ