4 Say to him, ‘Be careful, keep calm and don’t be afraid. Do not lose heart because of these two smoldering stubs of firewood—because of the fierce anger of Rezin and Aram and of the son of Remaliah.

Read Isaiah 7:4 Using Other Translations

And say unto him, Take heed, and be quiet; fear not, neither be fainthearted for the two tails of these smoking firebrands, for the fierce anger of Rezin with Syria, and of the son of Remaliah.
And say to him, 'Be careful, be quiet, do not fear, and do not let your heart be faint because of these two smoldering stumps of firebrands, at the fierce anger of Rezin and Syria and the son of Remaliah.
Tell him to stop worrying. Tell him he doesn’t need to fear the fierce anger of those two burned-out embers, King Rezin of Syria and Pekah son of Remaliah.