What is the fine-grained topic of the following text: You must know (recognize) that you were redeemed (ransomed) from the useless (fruitless) way of living inherited by tradition from [your] forefathers, not with corruptible things [such as] silver and gold, but [you were purchased] with the precious blood of Christ (the Messiah), like that of a [sacrificial] lamb without blemish or spot. Only return the topic.
Redemption through the blood of Christ