Repentance in the Hebrew Scriptures uses several idioms for Repent.

Shuv, meaning return, is one of the most common Hebrew idioms for Repentance. Shuv is the masculine, second person singular imperative: a command to you, personally to Repent.

T’shuva is the common reference to the month of Elul as the time of repentance leading up to the Day of Memorial (Rosh Hashanah). The modern use of T’shuva is for the call to repent, but technically T’suva is the masculine, third person singular, future tense: He (Y’shua) will Return!