Here in the earliest textual sources, we have an intransitive use of the verb raise. Such usage occurred fairly often in the original text, as explained under 2 Nephi 3:24. Although there is no other example exactly like this one in the text, there are four examples of “to raise up in rebellion” (as well as four of “to rise up in rebellion”); for discussion, see under Alma 57:32. In each case we follow the earliest textual sources, thus raising here in Helaman 4:12. In this instance, the 1837 edition introduced the standard rising.
Summary: Restore raising in Helaman 4:12, the reading in 𝓟 and the 1830 edition; intransitive uses of the verb raise occurred fairly often in the original Book of Mormon text.