וַיֹּ֥אמֶר אֲבִימֶ֖לֶךְ אֶל־אַבְרָהָ֑ם מָ֣ה הֵ֗נָּה שֶׁ֤בַע כְּבָשֹׂת֙ הָאֵ֔לֶּה אֲשֶׁ֥ר הִצַּ֖בְתָּ לְבַדָּֽנָה׃
And Abimelech said unto Abraham: ‘What mean these seven ewe-lambs which thou hast set by themselves?’
Read kabbalistic (mystical) interpretation of Genesis 21:29: and classical mystical sources.