Usage: 2 forms in 2 verses
Form Translated As     In Verse(s)
σφακελίζοντεσ being inflamed LXX.Deut.28.32
σφακελίζοντασ inflaming LXX.Lev.26.16

Liddell-Scott-Jones

σφακελίζω (sphakelizō) to have an inflammation G:V

σφακελίζω-ίζω,

suffer from σφάκελος, to be gangrened, mortify, ἐσφακέλισέ τε τὸ ὀστέον καὶ μηρὸς ἐσάπη [Refs 5th c.BC+]; of the eyes, [LXX]: also in passive, ὁκόσοισιν ἂν σφακελισθῇ ἐγκέφαλος [Refs 5th c.BC+]

__2 of the effect of severe cold on single limbs, to be frost-bitten, [Refs 1st c.BC+]
__3 of plants and trees, to be blighted, [Refs 4th c.BC+]
__II to have spasms or convulsions, ἀπορεῖν καὶ σ. τῷ δεινῷ [Refs 5th c.BC+]

LSJ Scripture Refs: LXX.Lev.26.16LXX.Deut.28.32