When the days of their purification according to the law of Moses were fulfilled, they brought him up to Jerusalem, to present him to the Lord
Hence too we ought to learn, how dreadful is the contagion of sin, which defiles, in some measure, the lawful order of nature. I do own that child-bearing is not unclean, and that what would otherwise be lust changes its character, through the sacredness of the marriage relation. But still the fountain of sin is so deep and abundant, that its constant overflowings stain what would otherwise be pure. 