"the writing is on the wall" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "writing on the wall"
      },
      "expansion": "writing on the wall",
      "name": "m"
    }
  ],
  "etymology_text": "From the Biblical story in Daniel 5 where mysterious writing appearing on a wall during a feast held by King Belshazzar points to the downfall of the Babylonian Empire: see writing on the wall.",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "phrase"
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      "expansion": "the writing is on the wall",
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "senses": [
    {
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          "kind": "other",
          "name": "English entries with incorrect language header",
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          "source": "w"
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      "glosses": [
        "Disaster is imminent."
      ],
      "id": "en-the_writing_is_on_the_wall-en-phrase-uPLjrxUy",
      "links": [
        [
          "Disaster",
          "disaster"
        ],
        [
          "imminent",
          "imminent"
        ]
      ],
      "related": [
        {
          "word": "writing on the wall"
        }
      ],
      "translations": [
        {
          "code": "es",
          "english": "proverb",
          "lang": "Spanish",
          "sense": "Translations",
          "word": "cuando las barbas de tu vecino veas pelar, pon las tuyas a remojar"
        }
      ],
      "wikipedia": [
        "Belshazzar"
      ]
    }
  ],
  "word": "the writing is on the wall"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "writing on the wall"
      },
      "expansion": "writing on the wall",
      "name": "m"
    }
  ],
  "etymology_text": "From the Biblical story in Daniel 5 where mysterious writing appearing on a wall during a feast held by King Belshazzar points to the downfall of the Babylonian Empire: see writing on the wall.",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "phrase"
      },
      "expansion": "the writing is on the wall",
      "name": "head"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "related": [
    {
      "word": "writing on the wall"
    }
  ],
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      "glosses": [
        "Disaster is imminent."
      ],
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        [
          "Disaster",
          "disaster"
        ],
        [
          "imminent",
          "imminent"
        ]
      ],
      "wikipedia": [
        "Belshazzar"
      ]
    }
  ],
  "translations": [
    {
      "code": "es",
      "english": "proverb",
      "lang": "Spanish",
      "sense": "Translations",
      "word": "cuando las barbas de tu vecino veas pelar, pon las tuyas a remojar"
    }
  ],
  "word": "the writing is on the wall"
}