Lexical Definition

‎ἐπαρκέω‎ eparkéō (ep-ar-keh'-o) to help ^G:V
from ‎ἐπί‎ and ‎ἀρκέω‎

relieve.

• to avail for, i.e. help

Abbott-Smith

** ἐπ-αρκέω, -ῶ [in LXX: I Mac 8:26 11:35 * ;]
1. to be strong enough for.
2. to ward off.
3. to aid, relieve: c. dat. pers., I Ti 5:10, 16 (mid., WH, mg.).†

Abbott-Smith References

Liddell-Scott-Jones

ἐπαρκέω-έω,

future -έσω (see. below): Epic dialect aorist infinitive ἐπαρκέωέσσαι [Refs 3rd c.BC+]:—to be strong enough for a thing, in [Refs 8th c.BC+]. with accusative of things et dative person, ward off something from one, οὐδέ τί οἱ τό γ᾽ ἐπήρκεσε λυγρὸν ὄλεθρον [ἐπαρκέωέσει τὸ μὴ οὐ πεσεῖν ">Refs 8th c.BC+]prohibebit quominus.., [Refs 4th c.BC+]

__2 with accusative of things, ward off, prevent, ἐπαρκέωέσσαι κακότητα [Refs 3rd c.BC+]; σέ τοι μόνον δέδορκα πημονάν (Reiske for ποιμένων) ἐ. [Refs 5th c.BC+]
__3 with dative person only, help, assist, [NT+6th c.BC+]: absolutely, τίς ἄρ᾽ ἐπαρκέωέσε; who will aid? [Refs 5th c.BC+]
__II supply, furnish, ἄκος δ᾽ οὐδὲν ἐπἤρκεσαν, τὸ μὴ πόλιν.. παθεῖν [LXX+5th c.BC+]; also ἐ. τινὶ τῶν ἑαυτοῦ impart to him a share of.., [Refs 5th c.BC+]: with dative of things, supply with, πέπλοις [Refs 5th c.BC+]
__III absolutely, to be sufficient, enough, ὅσσον ἐπαρκέωεῖ [Refs 6th c.BC+]; ἐπαρκέωέσει νόμος ὅδ᾽ this law shall prevail, [Refs 5th c.BC+]
__III.2 stand to the credit of, with dative, γενεᾷ [Refs 5th c.BC+]

_{LSJ Scripture Refs: 1Tim.5.10}