|Miserére mei, Dómine,* quóniam ad te clamávi tota die.||Have mercy on me, Lord * for to you I have called all the day.|
Miserere mei = have mercy on me. Each Friday morning the first psalm of Morning Prayer begins with these words. Miserere is an imperative, a command, from miseror,misereri, to show pity, to have mercy, to be sorry for. It does not take an accusative as a direct object but rather a genitive, hence, mei. Domine = O Lord.
quoniam ad te clamavi = for to you I have called, or, for I have called to you.
tota die = all the day long.