Joel 3:4-5

New Catholic Bible

⁴ The sun will be turned to darkness
    and the moon to blood
before the coming of the day of the Lord,
    that great and terrible day.
⁵ Then everyone will be saved
    who calls on the name of the Lord.
For on Mount Zion
    there will be a remnant,
    as the Lord has said,
and in Jerusalem there will be survivors
    whom the Lord will call.