en_tn/act/02/20.md

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Peter continues to quote the prophet Joel in his speech to the Jews that he began in Acts 1:15.

the sun will be turned to darkness and the moon to blood

The exact meaning of this phrase is unclear. Just translate it as literally as possible into your language.

everyone who calls on the name of the Lord

AT: "everyone who calls on the Lord" (See: rc://en/ta/man/translate/figs-metonymy)

calls

prays or pleads