The number 27

Proclamation of the Gospel, preaching

Bullinger's note on twenty-seven is brief: Number in Scripture (ch. "Twenty-seven") reads it as three cubed, 3x3x3, intensifying the divine completeness he assigns to three, with no scriptural illustration given. Separate from Bullinger, and independently verifiable, the New Testament itself contains twenty-seven books, from Matthew through Revelation, a real count rather than a gematria construction. That fact plausibly underlies the popular "proclamation of the Gospel, preaching" label, since the twenty-seven New Testament books are themselves the church's record of gospel proclamation, but the label is an inference from the count, not a claim Bullinger or the text makes about the number twenty-seven directly. Present the 3-cubed arithmetic and the 27-book count as the honest anchors; hold "preaching" as a reasonable but derived association.

The mathematics

27 = 3³.
The only number equal to three times the sum of its digits: 2 + 7 = 9, and 3 × 9 = 27. Provable, not merely unbeaten — 10a + b = 3(a + b) forces 7a = 2b.
Twenty-seven is the famous hard case of the Collatz conjecture: start there, halve the evens and treble-plus-one the odds, and the chain climbs all the way to 9,232 and takes 111 steps to fall to one — far longer than any smaller start.

Every property here was checked before it was printed.

The same number, in what He made

The human hand is built of twenty-seven bones — eight in the wrist, five in the palm, fourteen in the fingers and the thumb (NCBI Bookshelf, Anatomy of the Hand). Three cubed, in the instrument that writes, works and blesses.

Sources are named in the line itself. “The heavens declare the glory of God; and the firmament sheweth his handywork.”

What they have said about this number

The essence of three — divine perfection cubed.

“The same may be said of TWENTY-SEVEN being the cube of three.”

E. W. Bullinger, Number in Scripture (1894)

“Things unveiled and revealed in God's presence — the light of truth.”

Troy Brewer, Numbers That Preach (2007)

In Hebrew and Greek

Hebrew

Esrim v'sheva (עֶשְׂרִים וְשֶׁבַע) - twenty-seven

Greek

Eikosi hepta (εἴκοσι ἑπτά) - twenty-seven

First occurrence

Genesis 1:1

In the beginning God created the heaven and the earth.

The pattern in Scripture

27 books in New Testament
3x3x3 = divine completeness cubed
27th chapter of Proverbs

27:27 verses

Genesis 27:27

And he came near, and kissed him: and he smelled the smell of his raiment, and blessed him, and said...

Leviticus 27:27

And if it be of an unclean beast, then he shall redeem it according to thine estimation, and shall a...

1 Chronicles 27:27

And over the vineyards was Shimei the Ramathite: over the increase of the vineyards for the wine cel...

Proverbs 27:27

And thou shalt have goats’ milk enough for thy food, for the food of thy household, and for the main...

Ezekiel 27:27

Thy riches, and thy fairs, thy merchandise, thy mariners, and thy pilots, thy calkers, and the occup...