Cf. Ps 85, 3.5
Miserére mihi, Dómine, quóniam ad te clamávi tota die: quia tu, Dómine, suávis ac mitis es, et copiósus in misericórdia ómnibus invocántibus te.
Have mercy on me, Lord, for I have cried out unto thee all day long; for thee, Lord, are gentle and gracious, and abounding in mercy toward all who call upon thee.