בְּשׂ֘וּמ֤וֹ לַיָּ֨ם ׀ חֻקּ֗וֹ וּ֭מַיִם לֹ֣א יַֽעַבְרוּ־פִ֑יו בְּ֝חוּק֗וֹ מ֣וֹסְדֵי אָֽרֶץ׃
바다의 한계를 정하여 물로 명령을 거스리지 못하게 하시며 또 땅의 기초를 정하실 때에
Rashi
when He gave the sea its boundary and decreed upon the Reed Sea when he created it, on the condition that it split before Moses.
Rashi
when He established the foundations of the earth Heb. בחקו from an expression of engraving (חקוי), as in (Isa. 49:16): “Behold on [My] hands I have engraved you (חקתיך),” and so (Ezek. 43:14): “And from the bottom (מחיק) upon the ground.”