'Shouldest' in the Bible

therefore I have declared it to thee from of old; before it came to pass I showed it thee; lest thou shouldest say, Mine idol hath done them, and my graven image, and my molten image, hath commanded them.

They are created now, and not from of old; and before this day thou heardest them not; lest thou shouldest say, Behold, I knew them.

Thus saith Jehovah, thy Redeemer, the Holy One of Israel: I am Jehovah thy God, who teacheth thee to profit, who leadeth thee by the way that thou shouldest go.

yea, he saith, It is too light a thing that thou shouldest be my servant to raise up the tribes of Jacob, and to restore the preserved of Israel: I will also give thee for a light to the Gentiles, that thou mayest be my salvation unto the end of the earth.