Why we can’t face god? Why angels exist?
The Creator Himself is so powerful and glorious that He cannot be approached in person by human beings. He alone "hath immortality, dwelling in the light which no man can approach unto: whom no man hath seen, nor can see (1 Timothy 6:16). Angels do not have man's shortcomings , and can therefore act for God and represent Him when communicating with men and women. They bridge the huge gap between the holiness and perfection of God in heaven and the shortcomings of dying people on this planet. Angels were made immortal (that is, never to die).
Having been brought into existence by God, the angels are called the "sons of God". These "sons of God" were there working for the Almighty. The Creator commanded, and the tasks were carried out.
How angels look like?
When the first man was being created, the angels gave him a form resembling their own. This does not mean that the first of the human race had exactly the same physical nature as the angels, for the angels were made to live for ever. Adam and Eve were not made never-dying: they did sin, and they suffered death as the punishment for it. That is why the whole human race has been dying ever since. The fact that man was created in the image of the angels speaks of God's ultimate intention for His creatures.
What is the use of angels?
For the believer knowing that the angels are there for his or her benefit is itself a great help. Just as we can have complete confidence in a skilled surgeon when undergoing a major operation (although we may never see him while our "eyes are closed" under the anaesthetic ). So, to understand the work of the angels is to be confident in God's care for us and in the ways of providence that surround our lives. Indeed ...