"Jerusalem" means here the Lord's church, and in a more eminent sense, heaven;{1} the "wall" means truth, which is a defence against the assault of falsities and evils;{2} "a hundred and forty and four" means all goods and truths in the complex;{3} "measure" means what a thing is,{4} a "man" means one in whom are goods and truths in general and in particular, thus in whom is heaven. And as it is from this that an angel is a man, it is said "the measure of a man, which is that of an angel." This is the spiritual meaning of these words. Without that meaning how could it be seen that "the wall of the Holy Jerusalem" is "the measure of a man, which is that of an angel?"{5} {Footnote 1} "Jerusalem" means the church (n. 402, 3654, 9166). {Footnote 2} The "wall" means truth defending against the assault of falsities and evils (n. 6419). {Footnote 3} "Twelve" means all truths and goods in the complex (n. 577, 2089, 2129, 2130, 3272, 3858, 3913). Likewise "seventy-two," and "a hundred and forty-four," since this comes from twelve multiplied into itself (n. 7973). All numbers in the Word signify things (n. 482, 487, 647, 648, 755, 813, 1963, 1988, 2075, 2252, 3252, 4264, 4495, 5265). Multiplied numbers have a like signification as the simple numbers from which they arise by multiplication (n. 5291, 5335, 5708, 7973). {Footnote 4} "Measure" in the Word signifies the quality of a thing in respect to truth and good (n. 3104, 9603). {Footnote 5} In regard to the spiritual or internal sense of the Word see the explanation of The White Horse in the Apocalypse, and the Appendix to The Heavenly Doctrine.