Weep: I do not forbid you: but anything blasphemous neither say nor do. Be your child what he may, he is not like Abel; and yet nought of this kind did Adam say; although that calamity was a sore one, that his brother should have killed him. But I am reminded of others also that have killed their brothers; when, for instance, Absalom killed Amnon the eldest born, and King David loved his child, and sat indeed in sackcloth and ashes, but he neither brought soothsayers, nor enchanters, (although there were such then, as Saul shows,) but he made supplication to God.
So do thou likewise: as that just man did, so do thou also; the same words say thou, when your child is dead, “I shall go to him, but he will not come to me.” This is true wisdom, this is affection. However much you may love your child, you will not love so much as he did then. For even though his child were born of adultery, yet that blessed man's love of the mother was at its height, and you know that the offspring shares the love of the parents. And so great was his love toward it, that he even wished it to live, though it would be his own accuser, but still he gave thanks to God.
What, do you think, did Rebecca suffer, when his brother threatened Jacob, and she grieved not her husband, but bade him send her son away? When you have suffered any calamity, think on what is worse than it; and you will have a sufficient consolation; and consider with yourself, what if he had died in battle? What if in fire? And whatsoever our sufferings may be, let us think upon things yet more fearful, and we shall have comfort sufficient, and let us ever look around us on those who have undergone more terrible things, and if we ourselves have ever suffered heavier calamities.
So does Paul also exhort us; as when he says, “You have not yet resisted unto blood, striving against sin”: and again, “There has no temptation taken you but such as man can bear.” Be then our sufferings what they may, let us look round on what is worse; (for we shall find such,) and thus shall we be thankful. And above all, let us give thanks for all things continually; for so, both these things will be eased, and we shall live to the glory of God, and obtain the promised good things, whereunto may all we attain, through the grace and love toward man, etc.
Source: Homilies on Colossians (New Advent)