'Ought' in the Bible

And he said to them, Why is it that ye have sought me? did ye not know that I ought to be occupied in my Father's business?

But woe unto you, Pharisees, for ye pay tithes of mint and rue and every herb, and pass by the judgment and the love of God: these ye ought to have done, and not have left those aside.

But the ruler of the synagogue, indignant because Jesus healed on the sabbath, answering said to the crowd, There are six days in which people ought to work; in these therefore come and be healed, and not on the sabbath day.

And this woman, who is a daughter of Abraham, whom Satan has bound, lo, these eighteen years, ought she not to be loosed from this bond on the sabbath day?

Ought not the Christ to have suffered these things and to enter into his glory?