anadiplosis in James 1:3-4

Greek: γινώσκοντες ὅτι τὸ δοκίμιον ὑμῶν τῆς πίστεως κατεργάζεται ὑπομονήν·ἡ δὲ ὑπομονὴ ἔργον τέλειον ἐχέτω, ἵνα ἦτε τέλειοι καὶ ὁλόκληροι, ἐν μηδενὶ λειπόμενοι.

Definition for anadiplosis: "repetition in the first part of a clause or sentence of a prominent word from the latter part of the preceding clause or sentence, usually with a change or extension of meaning."

https://www.dictionary.com/browse/anadiplosis

See also James 1:19-20; 26-27. 

In James 1:3-4, the prominent word is "endurance" (ὑπομονήν and ἡ ὑπομονὴ)

Sources:

https://scholar.sun.ac.za/bitstreams/f7fa7aa5-b1ca-4d2f-904d-724a89651357/download

https://diu.edu/documents/jlcr/jlcr-3.1-2022.pdf

Richard A. Lanham. A Handlist of Rhetorical Terms. Berkeley, Los Angeles, and London: University of California Press, 1991. Second Edition, Page 10.