Matthew 15:5

But ye say, etc.] RV 'But ye say, Whoever shall say to his father or his mother, That wherewith thou mightest have been profited by me is given to God he shall not honour his father (or, his mother).' It is a gift] Mk 'it is Corban.' 'Corban,' meaning originally a sacrifice or a gift to God, was used in NT. times as a mere word of vowing, without implying that the thing vowed would actually be offered or given to God. Thus a man Would say, 'Corban to me is wine for such a time,' meaning that he took a vow to abstain from wine. Or a man would say to a friend, 'Corban to me for such a time is whatsoever I might be profited by thee,' meaning that for such a time he vowed that he would receive neither hospitality nor any other benefit from his friend. Similarly, if a son said to his father or mother, 'Corban is whatsoever thou mightest have profited by me,' he took a vow not to assist his father or mother in any way, however much they might require it. A vow of this kind was held by the scribes to excuse a man from the duty of supporting his parents, and thus by their tradition they made void the word of God.