If angels are real, then God is real and we need not question his power to simply create angels, without any process understandable to us.
If, on the other hand, angels are not real then they were created in the human imagination. Our understanding of God has varied over the centuries and according to context. At times, angels fill the important role of messengers of God and sometimes even as his allies against evil, which is often personified by the fallen angel, Satan. At other times, God is absolutely omniscient and omnipotent and therefore has no possible need of messengers or allies. For example, how could there be a war in heaven if God could wipe out his opponents in an instant? Or, why would we need guardian angels if God is perfectly capable of guarding every individual who has ever lived? This helps demonstrate that angels are the product of the human imagination.
Not Angels But Angels was created in 1994.
We Are Not Angels was created in 1992.
The City of Falling Angels was created in 2005.
Sorrowful Angels was created in 1999.
Undercover Angels was created in 2002.
Vitamin Angels was created in 1994.
Flight Angels was created in 1940.
The Empire of the Angels was created in 2000.
Angels Unaware was created in 1985.
Nashua Angels was created in 1983.
The Killer Angels was created in 1974.
Dangerous Angels was created in 1998.