הַיֹּצֵ֣ר יַ֣חַד לִבָּ֑ם הַ֝מֵּבִ֗ין אֶל־כָּל־מַעֲשֵׂיהֶֽם׃
他一同塑造了他們眾人的心，明察他們一切的作為。
Rashi
He Who forms their hearts together All of their hearts together and knows all the thoughts. Our Sages, however, explain that it refers back to “From His dwelling place, the Creator oversees their hearts together,” and they derived from here that all are examined with a single glance (Rosh Hashana 18a).