Commenting on that moment during the Passion where an angel was sent to Christ to comfort him, St. Thomas More writes in the Sadness of Christ:
"But whoever is utterly crushed by feelings of anxiety and fear and is tortured by the fear that he may yield to despair, let him consider this agony of Christ, let him meditate on it constantly and turn it over in his mind, let him drink deep and health-giving draughts of consolation from this spring. For here he will see the loving Shepherd lifting the weak lamb on His shoulders playing the same role as he himself does, expressing his very own feelings, and for this reason: so that anyone who later feels himself disturbed by similar feelings might take courage and not think that he must despair. ... Let us beg Him with all our strength that He may deign to comfort us in our anguish by an insight into His; and when we urgently beseech Him, let us nevertheless follow His own most wholesome example by concluding our prayer with His own addition: 'Yet not as I will but as you will.' If we do these things diligently, I have no doubt at all that just as an angel brought Him consolation in answer to His prayer, so too each of our angels will bring us from His Spirit consolation that will give us the strength to persevere in those deeds that will lift us up to heaven."