SOUND'NESS, n.
1. Wholeness entireness an unbroken, unimpaired or undecayed state as the soundness of timber, of fruit, of the teeth, of a limb, &c.
2. An unimpaired state of an animal or vegetable body a state in which the organs are entire and regularly perform their functions. We say, the soundness of the body, the soundness of the constitution, the soundness of health.
3. Firmness strength solidity truth as soundness of reasoning or argument, of doctrine or principles.
4. Truth rectitude firmness freedom from error or fallacy orthodoxy as soundness of faith.
The King James Bible has stood its ground for nearly 400 years. However, during that time the English language has changed, and with it the meanings of some words it used. Here are more than 6,500 words whose definitions have changed since 1611.Wikipedia
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