"Began to be proud"

1. Alma 1: 22
     22 Nevertheless, there were many among them who began to be proud, and began to contend warmly with their adversaries, even unto blows; yea, they would smite one another with their fists.
2. 4 Ne. 1: 43
     43 And also the people who were called the people of Nephi began to be proud in their hearts, because of their exceeding riches, and become vain like unto their brethren, the Lamanites.