Definition: The word 'ancillary' in the Bible is used to describe a "convenient" or "supplementary" object that can be needed for performing divine commandments, but does not require divine intervention. It refers to something auxiliary, or lacking in essential need, for doing God's will and commands. Examples of ancillaries include the rain from heaven, the provision of food and drink, and the peace of mind from angels (Proverbs 28:30).