The matter is too heavy for him
Figuratively: beyond one's ability to carry out; difficult to deal with.
("You will surely wear out, both you and the people who are with you, for the matter is too heavy for you; you cannot do it alone" - Exodus 18:18)
Translation
Expression (Hebrew)
כָּבֵד מִמֶּנּוּ הַדָּבָר
Definition (Hebrew)
בְּהַשְׁאָלָה: מֵעֵבֶר לִיכָולְתּוֹ לְבַצֵּעַ. קָשֶׁה לוֹ לְהִתְמוֹדֵד עִם זֶה.
("נָבֹל תִּבֹּל גַּם אַתָּה גַּם הָעָם הַזֶּה אֲשֶׁר עִמָּךְ כִּי כָבֵד מִמְּךָ הַדָּבָר לֹא תוּכַל עֲשֹׂהוּ לְבַדֶּךָ"- שְׁמוֹת יח יח)