אִם־כֹּ֥ה יֹאמַ֛ר ט֖וֹב שָׁל֣וֹם לְעַבְדֶּ֑ךָ וְאִם־חָרֹ֤ה יֶֽחֱרֶה֙ ל֔וֹ דַּ֕ע כִּֽי־כָלְתָ֥ה הָרָעָ֖ה מֵעִמּֽוֹ׃
If he say thus: It is well; thy servant shall have peace; but if he be wroth, then know that evil is determined by him.
Read kabbalistic (mystical) interpretation of I Samuel 20:7: and classical mystical sources.