He put himself in the place of.../ put oneself in someone else's place
He imagined himself in the position of..., "arrived" at the place of...
(The new Hebrew follows the expression "Do not judge your neighbor until you arrive at his place")
Translation
Expression (Hebrew)
הֶעֱמִיד אֶת עַצְמוֹ בְּמָקוֹם שֶׁל...
Definition (Hebrew)
דִּמָּה אֶת עַצְמוֹ מָצוּי בְּאוֹתוֹ הַמַּצָּב שֶׁל..., "הִגִּיעַ" לִמְקוֹמוֹ שֶׁל...
(הָעִבְרִית הַחֲדָשָׁה בַּעֲקֵבוֹ הַבִּטּוּי "אַל תָּדִין אֶת חֲבֵרְךָ עַד שֶׁתַּגִּיעַ לִמְקוֹמוֹ")