The number seven is used frequently in Scripture, and expresses the idea of completeness or fullness. Thus the text represents the hypocrite as having a heart filled with abominations. This figurative use of the number seven obtains in some parts of the East at the present day. It is frequently employed to signify an indefinite number, but always a large number, and hence conveys the idea of sufficiency. The Scripture passages where the word “seven” is used are too numerous to be quoted here. They are scattered all through the Bible, especially in the prophetical books; the book of Revelation making most frequent symbolical use of the word.
The interesting question, Why the number seven should be regarded a perfect number? is one the discussion of which does not fall within the scope assigned to this work. Those who desire information on this subject, and also on the general question of the sacred numbers used in the Bible, may consult, in addition to the various Bible Dictionaries and Encyclopedias, Stuart on the Apocalypse, in his Introduction, § 7, “Numerosity of the Apocalypse,” vol. 1, p. 130 and in Excursus II, “On the Symbolical Use of Numbers in the Apocalypse,” vol. 2, p. 409. Dr. Whedon also has a very valuable and characteristic note on the same subject in his Commentary on the Gospels, vol. 2, p. 77.