I wonder if that's something specific to the angels in heaven or if it refers to the fallen angels on this earth as well. I have to think that if God, who is spirit, can give a child to a woman (e.g. Isaac, Samson, Jesus, John the Baptist, etc.) then an angel - who seems to be both spirit and body - also could if all conditions were satisfied. Oh, not to mention that the angels - when described on this earth - often appear as men (those at the tomb, those with Abraham, etc.). So if some of the angels appeared as men on this earth, then does that mean they have the full functionality of men while on the earth?
Heb. Angels
mal-awk'
From an unused root meaning to despatch as a deputy; a messenger; specifically of God, that is, an angel (also a prophet, priest or teacher): - ambassador, angel, king, messenger.
Greek Angels
ang'-el-os
From ἀγγέλλω aggellō (probably derived from G71; compare G34; to bring tidings); a messenger; especially an "angel"; by implication a pastor: - angel, messenger.
So, according to this they are despatchers, messengers,......prophets, teachers, pastors
Do you not know that we shall Judge Angels?
1Co 6:3 So, what could these Giants be to us today? A tall man, is just that, a tall man.
Giants were a shadow a type of something.