'Able' in the Bible

But Judah said, "The strength of the carriers is failing, and there is too much dirt, and we are not able to build at the wall."

and I said to them: "We ourselves have bought back our brothers the Jews who were sold to the nations as we were able. But now you yourselves have sold your brothers so they may be sold to us!" They were silent and could not find a word [to say].

So I sent messengers to them, saying, "I am doing a great work and I am not able to come down. Why should the work stop while I leave it and come down to you all?"

These were the ones who came up from Tel-melah, Tel-harsha, Cherub, Addon, and Immer, but they were not able to prove their ancestral houses or their descent, whether they were from Israel: