This chapter examines the problem of temporal and modal persistence, drawing on the analogy between temporality and modality. It explores how both phenomena involve similar challenges and propose structurally analogous responses. The chapter outlines key debates on persistence, focusing on the contrast between perdurantism and endurantism, and investigates the methodological parallels between temporal and modal theories. This discussion culminates in an exploration of metaphysical equivalence between competing temporal and modal views.