Russian wiktionary claim that the word крест is loanword from Old High German krist. Is it traditional and valid etymology? Do Russian have any trace of proper (not borrowed) Protoslavic word with meaning of крест? The evolution of meaning cited in wiktionary is very "strange" for me also: Jesus Christ > crucifixion > cross. Russian language (Proto-Slavic) have had no word for very simple "cross"?!
EDIT: I asked the question not clear enough actually: 1) Why the evolution of semantics of Proto-Slavic(sic!) word *krьstъ start by meaning Jesus Christ, clearly Proto-Slavic (circa 7th to 8th centuries AD) was far before history of Christianity. How this meaning could be in Proto-Slavic?