HIERONYMUS GRÆCUS THEOLOGUS (cent. IV?) de Trin. treats the hymn, flames and dew in the furnace, μία κάμινος οὐσα, as an emblem of the Three in One.
SULPICIUS SEVERUS (†400?) Hist. sacr. II. § 5 shews knowledge of this Song by writing of the Three as "deambulantes in camino psalmum Deo dicere cernerentur."
CHRYSOSTOM (†407) De incomprehensibili Dei natura V. 7, οί τρεῖς παῖδες ἐν καμίνῳ διῆγον ... λέγουσιν, οὐκ ἔστιν ἡμῖν κ.τ.λ. In Isaiam VI. ἐπεὶ καὶ οἱ παἱδες οἱ τρεῖς τοῦτο αὐτὸ ἔλεγον σχεδὸν ἐν τῇ καμίνῳ ὄντες· οὐκ ἔστιν ἡμῖν ἀνοῖξαι τὸ τόμα. Hom. IV. ad pop. Antioch. (de statuis) τὰς ίερὰς ἐκείνας ἀνπεμπον εὐχας. Also De incarnatione VI.
RUFINUS (†410) adv. Hieron. lib. II. upbraids Jerome for not reckoning the piece canonical.
JEROME (†420). In the Comes or Lectionary, the Song is made use of, but probably the Comes is not really Jerome's. (See art. Lectionary, D.C.A. 962a.)
THEODOERT (†457) in Letter CXLVI. quotes v. 63 amongst a string of canonical texts; and also deals with the whole in his Commentary on Daniel, as consolidated with chap. iii.
SEDULIUS (†460?). In his poem De tribus pueris there is nothing which goes beyond the canonical record; but, strangely enough, in his Miraculorum recapitulatio proedictorum there are the lines
".... flagrante camino
Servavit sub rore pios."
And equally in the prose version "rore sydereo puerorum membra proluit in camino." This shews a recognition of v. 50 (de la Bigne, Bibliotheca Patrum, ed. 4, 1624, pp. 660, 661, 914).
VERECUNDUS (†552) wrote a comment on some of the ecclesiastical canticles including the prayers of Azarias and Manasses (printed in Spicilegium, Solesmense, Vol. IV.).