Alma 52:34

Moroni being in their course of march, therefore Jacob was determined to slay them, and cut his way through to the city of Mulek. But behold, Moroni and his men were more powerful; therefore they did not give way before the Lamanites.

Moroni was in their way. So Jacob wanted to kill them and fight his way through to the city of Mulek. But Moroni and his men were more powerful. They did not let the Lamanites pass.

Since Moroni stood in their path, Jacob was determined to cut through them and reach the city of Mulek. But Moroni and his men were stronger, and they didn’t give ground to the Lamanites.