When did the Jews reach the Promised Land? Joshua 4:19 says that they came up from the Jordan on the tenth day of the first month. Joshua 5:10 says that the Jews then celebrated the Passover on the evening of the fourteenth day of the first month.
The tenth day of the first month was already designated as a day of preparation for the Passover; that day each family was supposed to procure its Passover lamb. (Exodus 12:3)
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