Were angels created before or after human beings?

Angels were created before human beings (CCC 327) and have assisted human beings throughout salvation history to the present day. This is why we join with the angels in prayer during the liturgy, especially when we sing their unending cry of “Holy, holy, holy is the Lord God almighty!” The Church teaches that each of us receives a guardian angel that acts as a shepherd who leads us closer to God (CCC 336).