The Greek and Hebrew that is translated as “brother” in English is translated in Kwere as sekulu, in Elhomwe as mbalaawo´, and in Mandarin Chinese as gēgē (哥哥), both “older brother.”
Note that Kwere also uses lumbu — “older sibling” in some cases. (Source for Kwere and Elhomwe: Pioneer Bible Translators, project-specific translation notes in Paratext; Chinese: Jost Zetzsche)
See also older brother (Japanese honorifics).