The Rambam (Hilchos Teshuva 2, 1) says that, if a person faces the same Nisayon, and overcomes it ONCE, that is Teshuva Gemura. The Rambam also says (Hilchos Teshuva 2, 3) that Teshuva (here he doesn't use the stronger term "Teshuva Gemura") is where Hashem testifies tha...
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