"The prayers offered in public should be short and to the point. God does not require us to make the season of worship tedious by lengthy petitions. Christ did not enforce upon His disciples wearisome ceremonies and long prayers. “When thou prayest,” He said, “thou shalt not be as the hypocrites are: for they love to pray standing in the synagogues and in the corners of the streets, that they may be seen of men.” [ Matthew 6:5 .] GW 175.1"
"And when thou prayest, thou shalt not be as the hypocrites are: for they love to pray standing in the synagogues and in the corners of the streets, that they may be seen of men. Verily I say unto you, They have their reward."
Ellen White directly references Matthew 6:5 in this passage.