You may say it is well for them, they were Saints, yes but they were like us in their humanity and they suffered alot and maybe more than any of us. It was during these moments of suffering they were sanctified. And they could see with the eyes of faith that a loving God was always there for them and they trusted Him. It is an attitude of trust that develops from giving thanks because we see God as our maker, the all powerful and magnificent God who created all Heaven and Earth.
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From the Catechism of the Catholic Church 1328 The inexhaustible richness of this sacrament is expressed in the different names we give it. Each name evokes certain aspects of it. It is called: Eucharist, because it is an action of thanksgiving to God. The Greek words eucharistein and eulogein recall the Jewish blessings that proclaim - especially during a meal - God's works: creation, redemption, and sanctification.
From the Saints...
"There is no prayer more agreeable to God, or more profitable to the soul, than that which is made during the thanksgiving after Communion. It is the opinion of many writers (Suarez, Cajetan, Valentia, De Lugo, and others), that the Holy Communion, so long as the sacramental species lasts, constantly produces greater and greater graces in the soul, provided the soul is then constant in disposing itself by new acts of virtue.
St. Magdalena de Pazzi
"The minutes that follow Communion are the most precious we have in our lives."
St. Louis de Montfort,
"I would not give up this hour of Thanksgiving even for an hour of Paradise."
St. Josemaria Escriva preached
"If we love Christ, who offers Himself for us, we will feel compelled to find a few minutes after Mass for an intimate personal thanksgiving, which will prolong in the silence of our hearts that other thanksgiving which is the Eucharist." In his short homily In Love with the Church, St. Josemaría says, "We give thanks to God our Lord for the wonderful way He has given Himself up for us. Imagine, the Word made flesh has come to us as our food! ...Inside us, inside our littleness, lies the Creator of heaven and earth!"
St. Padre Pio
When Mass was over I remained with Jesus in thanksgiving. Oh how sweet was the colloquy with paradise that morning! It was such that, although I want to tell you all about it, I cannot. ... The heart of Jesus and my own — allow me to use the expression — were fused. No longer were two hearts beating but only one. My own heart had disappeared, as a drop of water is lost in the ocean. Jesus was its paradise, its king. My joy was so intense and deep that I could bear it no more and tears of happiness poured down my cheeks.