Reply Obj. 3: That some who have hope fail to obtain happiness, is due to a fault of the free will in placing the obstacle of sin, but not to any deficiency in God's power or mercy, in which hope places its trust.
 Thomas Aquinas, Summa Theologica (1274). copy citation

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Author Thomas Aquinas
Source Summa Theologica
Topic happiness sin
Date 1274
Language English
Reference
Note Translated by Fathers of the English Dominican Province
Weblink http://www.gutenberg.org/cache/epub/18755/pg18755-images.html

Context

“2: Hope does not trust chiefly in grace already received, but on God's omnipotence and mercy, whereby even he that has not grace, can obtain it, so as to come to eternal life. Now whoever has faith is certain of God's omnipotence and mercy.
Reply Obj. 3: That some who have hope fail to obtain happiness, is due to a fault of the free will in placing the obstacle of sin, but not to any deficiency in God's power or mercy, in which hope places its trust. Hence this does not prejudice the certainty of hope. _______________________
QUESTION 19 OF THE GIFT OF FEAR (In Twelve Articles)
We must now consider the gift of fear, about which there are twelve points of inquiry:
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