'Weak' in the Bible

and saith before his brethren and the force of Samaria, yea, he saith, 'What are the weak Jews doing? are they left to themselves? do they sacrifice? do they complete in a day? do they revive the stones out of the heaps of the rubbish? -- and they burnt!'

For they all wanted to frighten us, thinking, “They will become discouraged with the work and it will not be done.” But now, [O God,] strengthen my hands.