'Second' in the Bible

There is one alone and without a second; also he hath neither son nor brother: yet is there no end of all his labour, neither is his eye satisfied with riches, and he saith not, For whom then am I labouring, and depriving my soul of good? This also is vanity and a grievous occupation.

I saw all the living that walk under the sun, with the child, the second, that should stand up in his stead.