Push at an open door
They try to argue or try to convince others with things that are too difficult to agree on.
(Modern Hebrew)
Translation
Expression (Hebrew)
הִתְפָּרֵץ לְדֶלֶת פְּתוּחָה
Definition (Hebrew)
טעםן טְעָנוֹת אוֹ נִיסָּה לְשַׁכְנֵעַ בִּדְבָרִים שֶׁכְּבָר יֶשְׁנָם עֲלֵיהֶם הַסְכָּמָה.
(הָעִבְרִית הַחֲדָשָׁה)