When... — Literally, In the coming against me (of) the wicked to devour my flesh — my enemies and my foes to me — themselves stumbled and fell. Job 19:22 would allow us to understand those who eat up flesh, as a figure for calumniators and detractors; but the context marks out the situation so clearly as that of a warrior, that we rather take it as a general metaphor for savage and violent attacks. To me, is an emphatic repetition — my enemies, mine.
Related Commentaries of Psalms 27:2
Psalms 27:2
2 When the wicked, even mine enemies and my foes, camea upon me to eat up my flesh, they stumbled and fell.