Mulberry
Heb. bakah, “to weep;” rendered “Baca” (R.V., “weeping”) in Ps. 84:6. The plural form of the Hebrew bekaim is rendered “mulberry
trees” in 2 Sam. 5:23, 24 and 1 Chr. 14:14, 15. The tree here
alluded to was probably the aspen or trembling poplar. “We know
with certainty that the black poplar, the aspen, and the
Lombardy poplar grew in Palestine. The aspen, whose long
leaf-stalks cause the leaves to tremble with every breath of
wind, unites with the willow and the oak to overshadow the
watercourses of the Lebanon, and with the oleander and the
acacia to adorn the ravines of Southern Palestine” (Kitto). By
“the sound of a going in the tops of the mulberry trees” we are
to understand a rustling among the trees like the marching of an
army. This was the signal that the Lord himself would lead forth
David’s army to victory. (See SYCAMINE.)