'Shouldest' in the Bible

Better is it that thou shouldest not vow, than that thou shouldest vow and not pay.

Be not righteous over much; neither make thyself over wise: why shouldest thou destroy thyself?

Be not over much wicked, neither be thou foolish: why shouldest thou die before thy time?

It is good that thou shouldest take hold of this; yea, also from this withdraw not thine hand: for he that feareth God shall come forth of them all.