King James Version (KJV)
Thy bow was made quite naked, {according} to the oaths of the tribes, {even thy} word. Selah. Thou didst cleave the earth with rivers. {earth...: or, rivers of the earth}
Modern English
You uncovered your bow. You called for your sworn arrows. Selah. You split the earth with rivers.
Hebrew
עֶרְיָ֤ה תֵעוֹר֙ קַשְׁתֶּ֔ךָ שְׁבֻע֥וֹת מַטּ֖וֹת אֹ֣מֶר סֶ֑לָה נְהָר֖וֹת תְּבַקַּע־אָֽרֶץ׃
ʿeryah teʿvor qashteka shbuʿvot maṭvot ʾomer selah nharvot tbaqaʿ-ʾareṣ