“When we look at Jesus, we often (and rightly) say that by suffering and dying for us, He merited our salvation. His passion and death are causes of our salvation. Nonetheless, St. Thomas tells us that sufferings and toils are meritorious only insofar as they are borne willingly (ST I-II q. 114, a. 4, ad 3). The strength to bear these difficulties willingly comes from love. In other words, it is by Christ’s love, His charity, that His passion and death become causes of our salvation. The immensity of His sufferings manifests His love: “God proved His love for us that while we were yet sinners, Christ died for us” (Rom 5:8). Elsewhere the same Apostle says, “Christ loved the church and gave Himself up for her, that He might sanctify her” (Eph 5:25-26). The motive and power of Christ’s suffering is found in His infinite love.
Difficulty and suffering have a complex relationship with charity and merit. St. Thomas gives us two ways to consider it. “First, from the greatness of the work” (ST I-II q. 114, a. 4, ad 2). Great charity motivates great work, and so the difficulty is a sign of the charity and its merit, not the cause. Bringing the Gospel to unknown lands as a missionary or finding the means to serve the poor in a country plagued by poverty may involve many obstacles and difficulties; it is charity that works through them. “Secondly, from the defect of the operator” (ibid.). Tasks that involve self-denial and suffering are difficult because our own desires get in the way. We don’t want to clean the bathroom because it means we can’t relax or play a game instead. This sort of difficulty is healed by charity. By charity we love God above all and our neighbor for God’s sake, so we find not only supernatural strength but also a desire to perform those good actions that cost us time or treasure. In each case, we see that the grace of charity lies at the heart of merit.”
Summa Catechetica, "Neque enim quaero intelligere ut credam, sed credo ut intelligam." – St Anselm, "Let your religion be less of a theory, and more of a love affair." -G.K. Chesterton, "I want a laity, not arrogant, not rash in speech, not disputatious, but men and women who know their religion, who enter into it, who know just where they stand, who know what they hold and what they do not, and who know their creed so well that they can give an account of it."- Bl John Henry Newman, Cong. Orat., "Encounter, not confrontation; attraction, not promotion; dialogue, not debate." -cf Pope Francis, “You will not see anyone who is really striving after his advancement who is not given to spiritual reading. And as to him who neglects it, the fact will soon be observed by his progress.” -St Athanasius, "To convert someone, go and take them by the hand and guide them." -St Thomas Aquinas, OP. 1 saint ruins ALL the cynicism in Hell & on Earth. “When we pray we talk to God; when we read God talks to us…All spiritual growth comes from reading and reflection.” -St Isidore of Seville, “Also in some meditations today I earnestly asked our Lord to watch over my compositions that they might do me no harm through the enmity or imprudence of any man or my own; that He would have them as His own and employ or not employ them as He should see fit. And this I believe is heard.” -GM Hopkins, SJ, "Only God knows the good that can come about by reading one good Catholic book." — St. John Bosco, "Why don't you try explaining it to them?" – cf St Peter Canisius, SJ, Doctor of the Church, Doctor of the Catechism, "Already I was coming to appreciate that often apologetics consists of offering theological eye glasses of varying prescriptions to an inquirer. Only one prescription will give him clear sight; all the others will give him at best indistinct sight. What you want him to see—some particular truth of the Faith—will remain fuzzy to him until you come across theological eye glasses that precisely compensate for his particular defect of vision." -Karl Keating, "The more perfectly we know God, the more perfectly we love Him." -St Thomas Aquinas, OP, ST, I-II,67,6 ad 3, “But always when I was without a book, my soul would at once become disturbed, and my thoughts wandered." —St. Teresa of Avila, "Let those who think I have said too little and those who think I have said too much, forgive me; and let those who think I have said just enough thank God with me." –St. Augustine, "Without good books and spiritual reading, it will be morally impossible to save our souls." —St. Alphonsus Liguori "Never read books you aren't sure about. . . even supposing that these bad books are very well written from a literary point of view. Let me ask you this: Would you drink something you knew was poisoned just because it was offered to you in a golden cup?" -St. John Bosco " To teach in order to lead others to faith is the task of every preacher and of each believer." —St. Thomas Aquinas, OP