Mosiah 10:16

And again: They were wroth with him, because he departed into the wilderness as the Lord had commanded him, and took the records which were engraven on the plates of brass; for they said that he robbed them.

They were angry because he went into the wilderness like the Lord told him to. He took the metal plates with writing on them. They said he stole them.

Then they were furious again because he went into the wilderness, just as the Lord told him to, and took the brass plates with him. They said he’d robbed them.