8. Moreover, if you wish to receive from God the aid which you ask, you must remove every obstacle which may render you unworthy of being heard. For example: if you ask of God strength to preserve you from relapsing into a certain sin, but will not avoid the occasions of the sin, nor keep at a distance from the house, from the object, or the bad company, which led to your fall, God will not hear your prayer. And why? Because “thou hast set a cloud before thee, that prayer may not pass through. ” (Thren. iii. 44.) Should you relapse, do not complain of God, nor say: I have besought the Lord to preserve me from falling into sin, but he has not heard me. Do you not see that, by not taking away the occasions of sin, you have interposed a thick cloud, which has prevented your prayers from passing to the throne of divine mercy.
9. It is also necessary to remark that the promise of Jesus Christ to hear those who pray to him does not extend to all the temporal favours which we ask such as a plentiful harvest, a victory in a law-suit, or a deliverance from sickness, or from certain persecutions. These favours God grants to those who pray for them; but only when they are conducive to their spiritual welfare. Otherwise he refuses them; and he refuses them because he loves us, and because he knows that they would be injurious to our souls. “A physician," says St. Augustine, "knows better than his patient what is useful for him" (tom. 3, cap. ccxii). The saint adds that God refuses to some, through mercy, what he grants to others as a chastisement. “Deus negat propitius, quæ concedit iratus." Hence St. John Damascene says that sometimes, when we do not obtain the graces which we ask, we receive, by not receiving them; because it is better for us not to receive than to receive them. “Etiam si non accipias, non accipendo accepisti, interdum enim non accipere quam accipendo satius est." (Paral, lib. 3, cap. xv.) We often ask poison which would cause our death. How many are there who, had they died in the sickness or poverty with which they had been afflicted, should be saved? But because they recovered their health, or because they were raised to wealth and honours, they became proud