耶穌的父母每年逾越節往耶路撒冷去。衪到了十二歲時，他們又照節日的慣例上去了。過完了節日，他們回去的時候，孩童耶穌卻留在耶路撒冷，衪的父母並未發覺。他們只以為衪在同行的人中間，遂走了一天的路程；以後就在親戚和相識的人中尋找衪。既找不著，便折回耶路撒冷找衪。過了三天，才在聖殿裏找到了衪。衪正坐在經師中，聆聽他們，也詢問他們。凡聽見衪的人，對衪的智慧和對答，都驚奇不止。他們一看見衪，便大為驚異，衪的母親就向衪說：「孩子，為什麼你這樣對待我們? 看，你的父親和我，一直痛苦的找你。」耶穌對他們說：「你們為什麼找我? 你們不知道我必須在我父親那裡嗎?」但是，他們不明白衪對他們所說的話。衪就同他們下去，來到納匝肋，屬他們管轄。衪的母親把一切默存在心中。耶穌在智慧和身量上，並在天主和人前的恩愛上，漸漸地增長。
(Our Lady of Mount Carmel)
A Reading from the Holy Gospel according to Luke 2: 41-52
41 Each year his parents went to Jerusalem for the feast of Passover, and when he was twelve years old, they went up according to festival custom. 43 After they had completed its days, as they were returning, the boy Jesus remained behind in Jerusalem, but his parents did not know it. 44 Thinking that he was in the caravan, they journeyed for a day and looked for him among their relatives and acquaintances, 45 but not finding him, they returned to Jerusalem to look for him. 46 After three days they found him in the temple, sitting in the midst of the teachers, listening to them and asking them questions, 47 and all who heard him were astounded at his understanding and his answers. 48 When his parents saw him, they were astonished, and his mother said to him, “Son, why have you done this to us? Your father and I have been looking for you with great anxiety.” 49 And he said to them, “Why were you looking for me? Did you not know that I must be in my Father’s house?”* 50But they did not understand what he said to them. 51 He went down with them and came to Nazareth, and was obedient to them; and his mother kept all these things in her heart. 52 And Jesus advanced [in] wisdom and age and favor before God and man.
—The Gospel of the Lord.