וַיֹּ֤אמֶר שָׁאוּל֙ לַֽאֲחִיָּ֔ה הַגִּ֖ישָׁה אֲר֣וֹן הָאֱלֹהִ֑ים כִּֽי־הָיָ֞ה אֲר֧וֹן הָאֱלֹהִ֛ים בַּיּ֥וֹם הַה֖וּא וּבְנֵ֥י יִשְׂרָאֵֽל׃
And Saul said unto Ahijah: ‘Bring hither the ark of God.’ For the ark of God was there at that time with the children of Israel.
Read midrashic interpretation of I Samuel 14:18: and classical rabbinic exegesis.