“ The merciful ” are moved by compassion and pity for others. Jesus miraculously relieved the suffering of many because he had pity for them.
وَإِذَا كَانَ رَجَاؤُنَا أَرْضِيًّا ،‏ فَإِنَّ جُوعَنَا وَعَطَشَنَا إِلَى ٱلْبِرِّ سَيُشْبَعَانِ كَامِلًا حِينَ نَحْصُلُ عَلَى ٱلْحَيَاةِ ٱلْأَبَدِيَّةِ فِي عَالَمٍ بَارٍّ عَلَى ٱلْأَرْضِ .‏