The Angels being of God's nature, they must be sinless and therefore unable to die - seeing that sin brings death (Rom.6:23). They must have a literal, physical form of existence.
Malaika wakiwa na mwili wa Uungu, inabidi wawe hawana dhambi na kwa sababu hiyo hawawezi kufa kwa kuona kwamba dhambi huleta mauti (Rum. 6:23).