Deir Alla

dbr - word; he spoke (DNWSI 239; Hackett 1984:30)

II:17 l-dˁt spr dbr l-ˁmh ‘a strong Canaanite-linking isogloss’ (Kogan 2015: 421)

PC
*dbr - to speak (BDB 180, HALOT 210, DRS 214‒215, Schmidt 1978: 94‒95, Kogan 2015: 288)
Arb dabbara - ‘to consider, forecast the results of the affair’ is hardly directly connected