Some translations set poetry farther to the right than the rest of the text to show that it is poetry. The ULB does this with the poetic song in 1:19-27.
David used two figures of speech to express that Jonathan and Saul were great warriors: "the bow of Jonathan did not turn back, and the sword of Saul did not return empty." (See: [[rc://en/ta/man/jit/figs-synecdoche]])