וַעֲבַדְתֶּ֗ם אֵ֚ת יְהוָ֣ה אֱלֹֽהֵיכֶ֔ם וּבֵרַ֥ךְ אֶֽת־לַחְמְךָ֖ וְאֶת־מֵימֶ֑יךָ וַהֲסִרֹתִ֥י מַחֲלָ֖ה מִקִּרְבֶּֽךָ׃
And ye shall serve the LORD your God, and He will bless thy bread, and thy water; and I will take sickness away from the midst of thee.
Read kabbalistic (mystical) interpretation of Exodus 23:25: and classical mystical sources.