@Ps 53:1-6. Upon Mahalath--(See on Ps 88:1, title). Why this repetition of the fourteenth Psalm is given we do not know.
1-4. with few verbal changes, correspond with @Ps 14:1-4.
5. Instead of assurances of God's presence with the pious, and a complaint of the wicked, @Ps 14:5,6 portrays the ruin of the latter, whose "bones" even "are scattered" (compare @Ps 141:7), and who are put to shame as contemptuously rejected of God.