The first verse of today (7,5) introduces a new subject: holiness. The point that seems to be made here is that holy things have their place and should not be profaned. 7,12 has often been termed, as the Golden rule, which the Matthean Jesus states, is a summary of the law and prophets. Here it is stated positively. One must treat others in the same way that one expects to be treated. This also means that one must take the initiative in doing the loving thing that does not wait to respond to the action of another. In the final two verses of this pericope (7,13-14) the point being made is that it is the narrow gate that leads to life and salvation and the broad or wide gate to damnation. One must make a choice for one or another.
We wish that people would be kind and understanding with us but we are seldom kind and understanding towards them. Often the behaviour that we find revolting in others is the behaviour we ourselves are guilt of. When we criticise others for being too harsh, we need to ask whether we have not been so.