וַיְהִ֞י כִּשְׁמֹ֨עַ יָרָבְעָ֤ם בֶּן־נְבָט֙ וְה֣וּא בְמִצְרַ֔יִם אֲשֶׁ֣ר בָּרַ֔ח מִפְּנֵ֖י שְׁלֹמֹ֣ה הַמֶּ֑לֶךְ וַיָּ֥שָׁב יָרָבְעָ֖ם מִמִּצְרָֽיִם׃
At nangyari, nang mabalitaan ito ni Jeroboam na anak ni Nebat, habang siya ay nasa Egipto pa, kung saan siya tumakas mula kay Haring Solomon, ay bumalik si Jeroboam mula sa Egipto.
Rashi
And it was when... heard The meaning is: And it was when he heard - prior to this, when they came to make him [Rehoboam] king in Shechem, when he [Jeroboam] was still in Egypt.