משלי ח:כט פירוש: רש״י

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.

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.”