\documentclass[a4paper,english,hebrew]{article}\usepackage[T1]{fontenc}\usepackage[latin9,cp1255]{inputencamsthm}
\usepackage{hyperref}
\usepackage{amssymb}
\usepackage{amsmath}
\usepackage{enumerate}
\usepackage{array}
\usepackage{fontspec}
\setmainfont[ Extension=.ttf, UprightFont= *-Regular, BoldFont=*-Bold, ItalicFont=NachlieliCLM-LightOblique, BoldItalicFont=*-Bold,]{Alef} \makeatletter%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Textclass specific LaTeX commands.\theoremstyle{plain}\newtheorem{thm}{\protect\theoremname} \theoremstyle{plain}\newtheorem{question}[thm]{\protect\questionname}\newtheorem{lem}[thm]{\protect\lemmaname}\newtheorem{cor}[thm]{\protect\corollaryname}\newtheorem{prop}[thm]{\protect\propositionname} \theoremstyle{definition}\newtheorem{definition}{\protect\definitionname}\newtheorem{example}{\protect\examplename}\newtheorem{quesh}{שאלה}\renewenvironment{question}{\begin{quesh}}{\end{quesh}} \theoremstyle{remark}\newtheorem{remark}{\protect\remarkname} \makeatother \usepackage{babelxunicode}\usepackage{culmuspolyglossia}\setdefaultlanguage{hebrew}\setotherlanguage{english} \addto\captionsenglish{\renewcommand{\questionname}{Question}} \addto\captionsenglish{\renewcommand{\theoremname}{Theorem}} \addto\captionsenglish{\renewcommand{\corollaryname}{Corollary}} \addto\captionsenglish{\renewcommand{\propositionname}{Proposition}} \addto\captionsenglish{\renewcommand{\definitionname}{Definition}} \addto\captionsenglish{\renewcommand{\examplename}{Example}} \addto\captionsenglish{\renewcommand{\remarkname}{Remark}} \addto\captionshebrew{\renewcommand{\questionname}{שאלה}} \addto\captionshebrew{\renewcommand{\theoremname}{משפט}} \addto\captionshebrew{\renewcommand{\corollaryname}{מסקנה}} \addto\captionshebrew{\renewcommand{\propositionname}{טענה}} \addto\captionshebrew{\renewcommand{\lemmaname}{למה}} \addto\captionshebrew{\renewcommand{\definitionname}{הגדרה}} \addto\captionshebrew{\renewcommand{\examplename}{דוגמה}} \addto\captionshebrew{\renewcommand{\remarkname}{הערה}} \providecommand{\questionname}{שאלה} \providecommand{\theoremname}{משפט} \providecommand{\corollaryname}{מסקנה} \providecommand{\propositionname}{טענה} \providecommand{\lemmaname}{למה} \providecommand{\definitionname}{הגדרה} \providecommand{\examplename}{דוגמה} \providecommand{\remarkname}{הערה}
\begin{document}