(sorry this is late had computer problems )
Matthew Chapter 5 Verse 7
Blessed (are) the merciful for they will receive mercy.
μακάριοι οἱ ἐλεήμονες ὅτι αὐτοὶ ἐλεηθήσονται.
Read also Matthew 18: 33 and James 2:13
Quite straightforward but do note the link between showing and being shown mercy.
Ἔλεος the stem of ἐλεήμων merciful and the verb ἐλεέω be merciful show mercy is not just an attitude but an action ἐλεος is pity mercy and compassion or as James puts it faith AND works.
Read the parable in Matthew 18: 33