en_tn/isa/48/19.md

Yahweh continues describing a hypothetical situation to the people of Israel. (See: Isaiah 48:17.)

Your descendants would have been as numerous as the sand, and the children from your womb as numerous as the grains of sand

These both mean that the people would have had more descendants than they could count. (See: rc://en/ta/man/translate/figs-parallelism and rc://en/ta/man/translate/figs-simile)

their name would not have been cut off

The people would not have lost their reputations or family histories. AT: "I would not have needed to destroy them" (See: rc://en/ta/man/translate/figs-activepassive and rc://en/ta/man/translate/figs-metonymy)