The text contains the second (11,47 – 51) and third (11,52) woe to the lawyers. The second woe deals with the attitude of the lawyers to the prophets whom their ancestors killed and the lawyers approve of that killing by building monuments to the same prophets. In this way they are accomplices to the murders.
The final woe condemns the lawyers because though they possessed knowledge, they did not use it as it was meant to be used, nor did they allow others to use it. They acted as stumbling blocks in others way.
The woes that Jesus pronounces do not go down too well with the Pharisees, who began to ask many questions in order to catch Jesus on the wrong foot.
We too can become stumbling blocks in other’s way to God by the things that we say and the things that we do. When we point out the negatives in others and in the process forget all the positive qualities they possess we cause them to stumble.