'Second' in the Bible

There is one, and there is not a second; even son or brother he hath not, and there is no end to all his labour! His eye also is not satisfied with riches, and he saith not, 'For whom am I labouring and bereaving my soul of good?' This also is vanity, it is a sad travail.

For if they fall, the one raiseth up his companion, but woe to the one who falleth and there is not a second to raise him up!

I have seen all the living, who are walking under the sun, with the second youth who doth stand in his place;