'As It is Written' in the Bible

(as it is written in the law of the Lord: every male that opens the womb must be considered consecrated to the Lord)

and he went into all the Jordan-district preaching a baptism of repentance for the remission of sins ??4 as it is written in the book of the sayings of the prophet Isaiah, The voice of one who cries in the desert, 'Make the way ready for the Lord, level the paths for him.