en_tn/1co/01/22.md

we preach

The word "we" refers to Paul and other evangelists. (See: rc://en/ta/man/translate/figs-exclusive)

Christ crucified

“about Christ, who died on a cross.” (UDB; see: rc://en/ta/man/translate/figs-activepassive)

a stumbling block

Just as a person can stumble over a block that is on a road, so is the message of salvation through Christ crucified is to the Jews. AT: "not acceptable" or "very offensive". (See: rc://en/ta/man/translate/figs-metaphor)