Milton naturally wrote his friend letters in impeccable Latin verse, and this one he seems to have composed almost immediately after having written, having completed,the Nativity Ode.

弥尔顿用毫无瑕疵的拉丁文很自然的给朋友写信，而且这首诗,是在弥尔顿一写完《圣诞清晨歌》,就拿去排版的。

耶鲁公开课 - 弥尔顿课程节选