إِنْ نَبَشْتُمْ مَا بَيْنَ مِلْحَةَ فَالصَّاقِبِ فِيهِ الْأَمْوَاتُ وَالْأَحْيَاءُ
Meaning: If you reopen the old conflicts between Milḥah and al-Ṣāqib, they concern both the dead and the living.
Nabashtum literally evokes digging up something buried; it is applied to reopening old quarrels. Milḥah and al-Ṣāqib are place names rather than common nouns to be translated literally.
The antithesis the dead and the living makes the afterlife of a conflict visible: disputes concern those who fell and those who must continue living with their consequences.