'Feeble' in the Bible

Why should you be stricken and punished again [since no change results from it]?You [only] continue to rebel.The whole head is sickAnd the whole heart is faint and sick.

Therefore all hands will fall limp,And every man’s heart will melt.

But now the Lord speaks, saying, “Within three years, as the years of a hired man [who will not serve longer than the agreed time], the glory of Moab will be degraded along with all the great population, and the remnant [that survives] will be very small and of no account.”

Encourage the exhausted, and make staggering knees firm.