In the Bible angels speak and humans speak back to them. This is the case with Mary in Luke 1. The angel speaks, Mary questions, and it goes back and forth. Abraham speaks with angels. So I would contend the Bible has enough evidence of angels speaking and humans speaking that speaking with an angel today would be reasonable. I've heard enough stories and read such that confirm that Christians today do speak with angels.
Some think we each have a guardian angel while others think we don't have an assigned guardian angel, while yet others think God at times - but not always and not by assignment to each of us - sends an angel on a mission of guarding. The Bible's evidence that each of us has a specific, assigned guardian angel is not as solid as some think, so I'm with those who think sometimes God sends guardian angels but that we don't have a specific guardian angel.
Angels do not intend to intimidate or scare, but their overwhelming glory and being will stun us into sudden contact with what is far beyond us.
Angels are spirits on mission, and that mission is God's. So, we can say that God, out of his love, sends angels to aid us in our redemption. Angels are sent for our redemption, and that redemption leads us all the way into the heights of worship.
Angels are here and around us; perhaps all around us. But we have to have an ear for them and an eye for them, and that only comes when we have the courage and faith to open ourselves to a world inhabited by more than humans and animals. There are angels around us.
Angels emerge from the presence of God and worship of God, are sent on mission for our redemption, so it doesn't surprise me to read in the Bible of angels leading us into the presence of God in worship.
