en_tn_lite_do_not_use/isa/57/03.md

But come here

God is calling all of the unfaithful people to come before him so he can judge them in a strong contrast to the promises for the righteous that came before.

sons of the sorceress

This is a strong insult against the people who practice sorcery because sorcery and magic includes idolatry. (See: rc://en/ta/man/jit/figs-metaphor)

children of the adulterer and the woman who has prostituted herself

This refers to actual and spiritual adultery. They have abandoned the worship of God and now worship other gods and idols along with actual prostitution in pagan Canaanite ceremonies.