'Months' in the Bible

As for that night, let darkness seize upon it; let it not be joined unto the days of the year, let it not come into the number of the months.

So am I made to possess months of vanity, and wearisome nights are appointed to me.

Seeing his days are determined, the number of his months are with thee, thou hast appointed his bounds that he cannot pass;

For what pleasure hath he in his house after him, when the number of his months is cut off in the midst?

Oh that I were as in months past, as in the days when God preserved me;

Canst thou number the months that they fulfil? or knowest thou the time when they bring forth?