'Ought' in the Bible

He ought not to be a new convert, for fear he should be blinded with pride and come under the same condemnation as the Devil.

But if I should be delayed, I have written so that you will know how people ought to act in God’s household, which is the church of the living God, the pillar and foundation of the truth.

And withal they learn to be idle, wandering about from house to house; and not only idle, but tattlers also and busybodies, speaking things which they ought not.