The verb means to hide oneself or others for the sake of protection from life-threatening situations.
1 Zephaniah is not saying that those who would be hidden will actually escape the day of the Lord. Rather, he is indicating that shelter is available in that day. The way of salvation must provide satisfaction (Exodus 12:12–13) and shelter (Exodus 12:22–23).
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3 Seek the LORD, all you humble of the land, who do his just commands; seek righteousness; seek humility; perhaps you may be hidden on the day of the anger of the LORD.