βεβαίωμα
From LSJ
οὕτως καὶ ἡ πίστις, ἐὰν μὴ ἔχῃ ἔργα, νεκρά ἐστιν καθ' ἑαυτήν → so even the Faith, if it does not have deeds, and is on its own, is dead | the Faith without works is dead
English (LSJ)
ατος, τό,
A confirmation, proof, J.AJ2.12.4, 17.1.1.
Greek (Liddell-Scott)
βεβαίωμα: τό, βεβαίωσις, ἀπόδειξις, ἐπικύρωσις, Ἰώσηπ. Α. Ι. 2. 12, 4, πρβλ. 17. 1, 1.