epanadiplosis

‖n. [ L., fr. Gr. &unr_;; 'epi` + &unr_; to make double. ] (Rhet.) A figure by which the same word is used both at the beginning and at the end of a sentence; as, “Rejoice in the Lord always: and again I say, Rejoice.” Phil. iv. 4. [ 1913 Webster ]