the point on which Scriptures specially insist is that which tends most to our comfort, and to the confirmation of our faith, namely, that angels are the ministers and dispensers of the divine bounty toward us... we are told how they watch for our safety, how they undertake our defense, direct our path, and take heed that no evil befall us.Institutes, Book 1 Chapter 14
In Scripture, then, we uniformly read that angels are heavenly spirits, whose obedience and ministry God employs to execute all the purposes which he has decreed, and hence their name as being a kind of intermediate messengers to manifest his will to men.Institutes, Book 1 Chapter 14