For reasons I have yet to discern, reading Psalm 53 made me think of Oliver Nelson's minor blues tune Cascades from his album Blues and the Abstract Truth. So, I decided to quote the first ten notes of the melody as the soprano line of the chant.
1. The fool has said in his heart, "There | is no | God." *
All are corrupt and commit abominable acts;
there is | none who | does any | good.
2. God looks down from heaven | upon us | all, *
to see if there is any who is wise,
if there is | one who | seeks after | God.
3. Everyone has proved faithless;
all alike | have turned | bad; *
there is none who | does good; | no, not | one.
4. Have they no know- | ledge, those | evildoers *
who eat up my people like bread
and | do not | call upon | God?
5. See how greatly they tremble,
such trembling as | never | was; *
for God has scattered the bones of the enemy;
they are put to shame, because God | has re- | jected | them.
6. Oh, that Israel's deliverance would come | out of | Zion! *
when God restores the fortunes of his people
Jacob will re- | joice and | Israel be | glad.