diff --git a/12/21.txt b/12/21.txt
index 4d54f85..691ccf7 100644
--- a/12/21.txt
+++ b/12/21.txt
@@ -1,6 +1,6 @@
 [
 	{
-		"title": "雅威把多少王",
-		"body": ""
+		"title": "雅威让约书亚和以色列人征服多少王？",
+		"body": "一共三十一个王。"
 	}
 ]
\ No newline at end of file
diff --git a/manifest.json b/manifest.json
index 74311aa..4e95626 100644
--- a/manifest.json
+++ b/manifest.json
@@ -124,6 +124,7 @@
 		"11-18",
 		"12-01",
 		"12-06",
-		"12-07"
+		"12-07",
+		"12-21"
 	]
 }
\ No newline at end of file