The clause redaction of Matthew 21,43 in the context of the parable of vineyard from 21.33 to 46, is a question forensics. The sentence is essential to understand the meaning of the parable of vineyard (21,33-46) as a parable legal. Matthew verse 43 indicates the guilt of Israel (their leaders) and their immediate and inevitable doom, with the loss of basileia, to then transfer it to a new eqnoj, which produces fruits. This dynamic is articulated in a legal procedure perspective. This thesis argues that this issue points to the conception of legal meaning in the Gospel of Matthew, from the analysis of the constituent elements of the sentence of 21,43. The relevance of this issue is in the fact that a review of the literature Matthean legal perspective, it becomes possible from Matthew 21,43 and that the sentence provides a key of reading to interpreting the structure and the Matthean ecclesiology.