G3588 "provocation"

G3588 — ho hē to (ho hay to) ὁ ἡ τό: The masculine feminine (second) and neuter (third) forms in all their inflections; the definite article;
the (sometimes to be supplied at others omitted in English idiom): - the this that one he she it etc.

Hebrews 3 [.mp3]

⁸Harden not your hearts, as in the provocation, in the day of temptation in the wilderness:

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¹⁵While it is said, To day if ye will hear his voice, harden not your hearts, as in the provocation.