Lexical Definition

‎διατίθεμαι‎ diatíthemai (dee-at-ith'-em-ahee) to make a covenant ^G:V
middle voice from ‎διά‎ and ‎τίθημι‎

appoint, make, testator.

• to put apart, i.e. (figuratively) dispose (by assignment, compact, or bequest)

Abbott-Smith

δια-τίθημι [in LXX chiefly for כּרת, freq. δ. διαθήκην (כָּרַת בְּרִית) ;]
to place separately, arrange, dispose. Mid, only in NT;
1.
(a) in general, to dispose of; c. dat. pers., to assign to one, Lk 22:29;
(b) to dispose of by a will, make a testament (in cl., δ. διαθήκην also in this sense): He 9:16, 17 (but cf. R, mg., and v.s. διαθήκη).
2. δ. διαθήκην, to make a covenant (Aristoph.): c. dat. pers., He 8:10 (LXX); seq. πρός, c. acc pers., Ac 3:25, He 10:16 (LXX) (cf. ἀντι-διατίθημι).†

Abbott-Smith References

Liddell-Scott-Jones

διατίθημι,

3rd.pers. plural imperfect διετίθουν [Refs 4th c.BC+]:—arrange each in their several places, distribute, τὰ κρέα, in sacrificing, [Refs 5th c.BC+]

__II manage well or ill, usually with adverb, κράτιστα δ. τὰ τοῦ πολέμου [Refs 5th c.BC+]; of persons, δ. ἑωυτὸν ἀνηκέστως treat himself barbarously, [Refs 5th c.BC+] —passive, οὐ ῥᾳδίως διετέθη he was not very gently handled, [Refs 5th c.BC+]; ἀπόρως διατεθέντας reduced to helplessness, [Refs 5th c.BC+]
__II.2 with accusative person, with adverbs, dispose one so or so, ὅταν οὕτω διαθῇς τοὺς Ἕλληνας [Refs 5th c.BC+]:—passive, to be disposed in a certain manner, πρός τινα [Refs 5th c.BC+]; ἐρωτικῶς δ., of animals, [Refs 5th c.BC+]
__III set forth, of speakers, minstrels, etc., recite, κακῶς ποιήματα [Refs 5th c.BC+]
__III.2 describe, [Refs 1st c.BC+]
__B middle, arrange as one likes, dispose of, τὴν θυγατέρα [Refs 5th c.BC+]; spend, δ. τὰς οὐσίας εἴς τι [Refs 2nd c.BC+]
__B.2 dispose of one's property, devise it by will, [Refs 4th c.BC+]; δ. διαθήκας, διαθήκην, make a will, [Refs 5th c.BC+]; κἂν ἀποθάνῃ μὴ διαθέμενος intestate, [Refs 4th c.BC+]; ὁ δ. the testator, [NT]
__B.3 dispose of merchandise, φόρτον [Refs 5th c.BC+]; δ. τὴν ὥραν καὶ τὴν σοφίαν [Refs 5th c.BC+]
__B.4 arrange or settle mutually, δ. διαθήκην τινί make a covenant with one, [NT+5th c.BC+]; ἔριν δ. ἀλλήλοις settle a quarrel, [Refs 5th c.BC+]
__B.5 compose, make, νόμους [Refs 5th c.BC+]
__B.6 set forth, recite, λόγους, δημηγορίαν, etc., [Refs 2nd c.BC+]
__B.6.b Grammars, διατιθέναι and -τίθεσθαι to act and be acted upon, [Refs 2nd c.AD+]; τὸ διατιθέν and τὸ διατιθέμενον subject and object, [Refs]

_{LSJ Scripture Refs: Heb.9.16 ☩ Acts.3.25}