en_obs-tn/content/38/10.md

said to Jesus, “Even if I must die, I will never deny you!”

This is direct quotation. It can also be stated as an indirect quotation: "said to Jesus that even if he had to die, he would never deny Jesus!” (See: rc://en/ta/man/translate/figs-quotations)

deny you

That is, “deny that I know you” or, “deny that I am your disciple” or, “disown you.”