@Teresita,

I think that this is a misinterpretation. Jesus was never against people getting together to worship as a group. In the Garden of Gethsemane, he asked His apostles to stay up and pray along with Him. He also regularly attended the Temple in Jerusalem.

The point that He was trying to make is that it is hypocritical to be loud and ostentatious in one’s prayers. Those who do that are trying to impress other people, rather than communicating with God.