The Holy Angels and the Saints of God are our best, kindest, truest, brethren and friends, so often helping us in circumstances in which no one on this earth can do so.
As these brothers, who load us with benefits, are invisible, whilst we, on account of our corporality, wish to have them before our eyes, we have images of them; and looking upon these images we call upon these images, we call upon them in our prayers, knowing that they have great boldness before God, to help us.
St. John of Kronstadt
