"build on sand" meaning in English

{
  "etymology_text": "From the Parable of the Wise and the Foolish Builders in Matthew 7:24–27.",
  "forms": [
    {
      "form": "builds on sand",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "building on sand",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "built on sand",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "built on sand",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "build<,,built> on sand"
      },
      "expansion": "build on sand (third-person singular simple present builds on sand, present participle building on sand, simple past and past participle built on sand)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Loveless marriages often end in divorce because they are built on sand.",
          "type": "example"
        }
      ],
      "glosses": [
        "To put something in an unstable position by failing to give it a secure foundation."
      ],
      "id": "en-build_on_sand-en-verb-jZpvX2Qx",
      "links": [
        [
          "unstable",
          "unstable"
        ],
        [
          "position",
          "position"
        ],
        [
          "secure",
          "secure"
        ],
        [
          "foundation",
          "foundation"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) To put something in an unstable position by failing to give it a secure foundation."
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "en-au-build on sand.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/2/2b/En-au-build_on_sand.ogg/En-au-build_on_sand.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/2/2b/En-au-build_on_sand.ogg"
    }
  ],
  "word": "build on sand"
}

{
  "etymology_text": "From the Parable of the Wise and the Foolish Builders in Matthew 7:24–27.",
  "forms": [
    {
      "form": "builds on sand",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "building on sand",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "built on sand",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "built on sand",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "build<,,built> on sand"
      },
      "expansion": "build on sand (third-person singular simple present builds on sand, present participle building on sand, simple past and past participle built on sand)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English idioms",
        "English lemmas",
        "English multiword terms",
        "English terms with usage examples",
        "English verbs",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "text": "Loveless marriages often end in divorce because they are built on sand.",
          "type": "example"
        }
      ],
      "glosses": [
        "To put something in an unstable position by failing to give it a secure foundation."
      ],
      "links": [
        [
          "unstable",
          "unstable"
        ],
        [
          "position",
          "position"
        ],
        [
          "secure",
          "secure"
        ],
        [
          "foundation",
          "foundation"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) To put something in an unstable position by failing to give it a secure foundation."
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "en-au-build on sand.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/2/2b/En-au-build_on_sand.ogg/En-au-build_on_sand.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/2/2b/En-au-build_on_sand.ogg"
    }
  ],
  "word": "build on sand"
}