diff --git a/web/templates/entry_edit.html b/web/templates/entry_edit.html
index 92041fb..32f6f9d 100644
--- a/web/templates/entry_edit.html
+++ b/web/templates/entry_edit.html
@@ -166,4 +166,101 @@
   }
 })();
 </script>
+
+<style>
+  .scripture-valid,
+  textarea.scripture-valid,
+  input.scripture-valid   { background-color: hsl(140 80% 92% / 0.8); transition: background-color .15s ease; }
+  .scripture-invalid,
+  textarea.scripture-invalid,
+  input.scripture-invalid { background-color: hsl(0 80% 94% / 0.8);  transition: background-color .15s ease; }
+</style>
+
+<!-- Scripture Validation -->
+<script>
+(function () {
+  const el = document.getElementById("id_scripture_raw");
+  if (!el) return;
+
+  const WOL = new Set([
+    "Ge","Ex","Le","Nu","De","Jos","Jg","Ru","1Sa","2Sa","1Ki","2Ki","1Ch","2Ch","Ezr","Ne","Es","Job","Ps","Pr","Ec","Ca","Isa","Jer","La","Eze","Da","Ho","Joe","Am","Ob","Jon","Mic","Na","Hab","Zep","Hag","Zec","Mal",
+    "Mt","Mr","Lu","Joh","Ac","Ro","1Co","2Co","Ga","Eph","Php","Col","1Th","2Th","1Ti","2Ti","Tit","Phm","Heb","Jas","1Pe","2Pe","1Jo","2Jo","3Jo","Jude","Re"
+  ]);
+
+  const FULL = new Map([
+    ["genesis","Ge"],["exodus","Ex"],["leviticus","Le"],["numbers","Nu"],["deuteronomy","De"],
+    ["joshua","Jos"],["judges","Jg"],["ruth","Ru"],
+    ["1 samuel","1Sa"],["2 samuel","2Sa"],["1 kings","1Ki"],["2 kings","2Ki"],
+    ["1 chronicles","1Ch"],["2 chronicles","2Ch"],
+    ["ezra","Ezr"],["nehemiah","Ne"],["esther","Es"],["job","Job"],["psalms","Ps"],["psalm","Ps"],
+    ["proverbs","Pr"],["ecclesiastes","Ec"],["song of solomon","Ca"],["song of songs","Ca"],
+    ["isaiah","Isa"],["jeremiah","Jer"],["lamentations","La"],["ezekiel","Eze"],["daniel","Da"],
+    ["hosea","Ho"],["joel","Joe"],["amos","Am"],["obadiah","Ob"],["jonah","Jon"],["micah","Mic"],
+    ["nahum","Na"],["habakkuk","Hab"],["zephaniah","Zep"],["haggai","Hag"],["zechariah","Zec"],["malachi","Mal"],
+    ["matthew","Mt"],["mark","Mr"],["luke","Lu"],["john","Joh"],["acts","Ac"],["romans","Ro"],
+    ["1 corinthians","1Co"],["2 corinthians","2Co"],["galatians","Ga"],["ephesians","Eph"],
+    ["philippians","Php"],["colossians","Col"],
+    ["1 thessalonians","1Th"],["2 thessalonians","2Th"],
+    ["1 timothy","1Ti"],["2 timothy","2Ti"],
+    ["titus","Tit"],["philemon","Phm"],["hebrews","Heb"],["james","Jas"],
+    ["1 peter","1Pe"],["2 peter","2Pe"],
+    ["1 john","1Jo"],["2 john","2Jo"],["3 john","3Jo"],
+    ["jude","Jude"],["revelation","Re"]
+  ]);
+
+  function splitBookAndRest(s) {
+    const m = s.match(/^(.+?)\s+(\d{1,3}(?:\s*:\s*.*)?)$/);
+    return m ? {book: m[1], rest: m[2]} : null;
+  }
+
+  function lookupBookCode(bookRaw) {
+    let b = bookRaw.trim();
+
+    // allow trailing period
+    if (b.endsWith(".")) b = b.slice(0, -1);
+
+    const fullKey = b.toLowerCase().replace(/\s+/g, " ");
+    if (FULL.has(fullKey)) return FULL.get(fullKey);
+
+    const maybeAbbr = b.replace(/^([1-3])\s+([A-Za-z]+)/, (_, n, letters) => n + letters);
+    if (WOL.has(maybeAbbr)) return maybeAbbr;
+
+    if (WOL.has(b)) return b;
+    return null;
+  }
+
+  const versesRe = /^(\d{1,3})$|^(\d{1,3}):\s*(\d{1,3}(?:\s*-\s*(?:\d{1,3}|\d{1,3}:\d{1,3}))?(?:\s*,\s*\d{1,3}(?:\s*-\s*(?:\d{1,3}|\d{1,3}:\d{1,3}))?)*)$/;
+
+  function isValidSingleRef(ref) {
+    const s = ref.trim();
+    if (!s) return false;
+    const parts = splitBookAndRest(s);
+    if (!parts) return false;
+
+    const code = lookupBookCode(parts.book);
+    if (!code) return false;
+
+    const rest = (parts.rest || "").trim();
+    if (!rest) return false;
+
+    return versesRe.test(rest);
+  }
+
+  function validateAll() {
+    const raw = el.value || "";
+    const parts = raw.split(";").map(t => t.trim()).filter(Boolean);
+    if (parts.length === 0) {
+      el.classList.remove("scripture-valid","scripture-invalid");
+      return;
+    }
+    const allValid = parts.every(isValidSingleRef);
+    el.classList.toggle("scripture-valid", allValid);
+    el.classList.toggle("scripture-invalid", !allValid);
+  }
+
+  el.addEventListener("input", validateAll);
+  el.addEventListener("change", validateAll);
+  validateAll();
+})();
+</script>
 {% endblock %}
\ No newline at end of file