{The word of God} (ho logos tou theou). That just quoted
about the promise of rest and God's rest, but true of any real
word of God. {Living} (z(936e)). Cf. the Living God ( 3:12 ). In
Philo and the Book of Wisdom the Logos of God is personified, but
still more in  Joh 1:1-18  where Jesus is pictured as the Logos
on a par with God. "Our author is using Philonic language rather
than Philonic ideas" (Moffatt). See  Joh 6:63 : "The words which
I have spoken are spirit and are life." {Active} (energ(8873)).
Energetic, powerful ( Joh 1:12  Php 3:21  Col 1:29 ). {Sharper}
(	om(9374)eros). Comparative of 	omos, cutting (from 	emn(935c), to
cut), late adjective, here only in the N.T. {Than} (huper).
Often so after a comparative ( Lu 16:8  2Co 12:13 ). {Two-edged}
(distomon). "Two-mouthed" (di-, stoma), double-mouthed like a
river (Polybius), branching ways (Sophocles), applied to sword
(xiphos) by Homer and Euripides. {Piercing} (diiknoumenos).
Present middle participle of diikneomai, old verb to go
through, here only in N.T. {Even to the dividing} (achri
merismou). Old word from meriz(935c) (meros, part), to partition.
{Of soul and spirit} (psuch(8873) kai pneumatos). As in  1Th 5:23  1Co 15:45 , but not an argument for trichotomy. Psychology is
constantly changing its terminology. {Of both joints and marrow}
(harm(936e) te kai muel(936e)). From ar(935c), to join, comes harmos,
old word, here only in the N.T. Muelos (from mu(935c), to shut),
old word, here only in N.T. This surgeon goes into and through
the joints and marrow, not cleaving between them. {Quick to
discern} (kritikos). Verbal adjective in -ikos, from krin(935c),
skilled in judging, as the surgeon has to be and able to decide
on the instant what to do. So God's word like his eye sees the
secret lurking doubt and unbelief "of the thoughts and intents of
the heart" (enthum(8873)e(936e) kai ennoi(936e) kardias). The surgeon
carries a bright and powerful light for every dark crevice and a
sharp knife for the removal of all the pus revealed by the light.
It is a powerful picture here drawn.