The communication of angels is not usually verbal in the traditional sense of verbal communication. That is, no air is being vibrated. Rather, the form the communication takes is for the angel to "speak" by delivering to the mind of the person spoken to the concept or declaration to be understood. Then the person, receiving the concept or declaration into their mind, is obliged to convert into words the message received. If the vocabulary of the recipient is German, they will use German to reduce the message to words. If English, they will use English. If their vocabulary is rich and complex, the words may be more exact. If their vocabulary is simple, the words may be simple.
However one comes into the presence of God or His angelic ministers, once there, the thoughts that come to the person will conform to their understanding, their vocabulary, their manner of phrasing. The underlying purpose is always the same: to make the communication plain to the understanding of the person visited.
When we approach God, we do so by degrees not merely by study. We find ourselves gaining light that quickens our understanding. What we cannot understand at first, gains clarity only after a period of living true to the things we already have.