The Ten Days of Return — the ten days from Rosh HaShanah through Yom Kippur
also written: aseret yemei teshuvah, aseret yemei teshuva
In Scripture World English Bible
“Speak to the children of Israel, saying, ‘In the seventh month, on the first day of the month, shall be a solemn rest to you, a memorial of blowing of trumpets, a holy convocation. You shall do no regular work; and you shall offer an offering made by fire to Yahweh.’” Yahweh spoke to Moses, saying, “However on the tenth day of this seventh month is the day of atonement: it shall be a holy convocation to you, and you shall afflict yourselves; and you shall offer an offering made by fire to Yahweh.
Seek Yahweh while he may be found; call you on him while he is near: let the wicked forsake his way, and the unrighteous man his thoughts; and let him return to Yahweh, and he will have mercy on him; and to our God, for he will abundantly pardon.