your sons and your daughters. Sons and daughters were often punished along with parents for covenant transgressions (Deut. 28:32, 53; Jer. 5:17; Ezek. 24:21); violent death was a typical covenant punishment (Is. 3:25; Jer. 39:18).
die in a unclean land. Exile would be especially distasteful for the priest Amaziah: by living in a pagan land he would become ritually unclean. See note Lev. 11–16.
Israel . . . land. Amos sarcastically quotes Amaziah’s own words from v. 11 back at him.