According to Luke, Judas of Galilee led many people during the time when taxes were collected, but he died and his followers scattered. This shows that people who follow the wrong leaders can end up lost and confused.
Acts 5:37: After this man rose up Judas of Galilee in the days of the taxing, and drew away much people after him: he also perished; and all, [even] as many as obeyed him, were dispersed. [obeyed: or, believed]
While Acts 5:37 mentions Judas, it is a different Judas; Acts 1:18 speaks about the fate of Judas Iscariot, causing potential confusion.
Acts 1:18: Now this man purchased a field with the reward of iniquity; and falling headlong, he burst asunder in the midst, and all his bowels gushed out.