'Retain' in the Bible

And he taught me, and said unto me: Let thy heart retain my words; Keep my commandments, and live;

There is no man that hath power over the spirit to retain the spirit; neither hath he power over the day of death; and there is no discharge in war: neither shall wickedness deliver him that is given to it.

Will he retain his anger for ever? will he keep it to the end? Behold, thou hast spoken and hast done evil things, and hast had thy way.

And, behold, one in the likeness of the sons of men touched my lips: then I opened my mouth, and spake and said unto him that stood before me, O my lord, by reason of the vision my sorrows are turned upon me, and I retain no strength.

And at the end of years they shall join themselves together; and the daughter of the king of the south shall come to the king of the north to make an agreement: but she shall not retain the strength of her arm; neither shall he stand, nor his arm; but she shall be given up, and they that brought her, and he that begat her, and he that strengthened her in those times.