'Declining' in the Bible

And the man riseth to go, he and his concubine, and his young man, and his father-in-law, father of the young woman, saith to him, 'Lo, I pray thee, the day hath fallen toward evening, lodge all night, I pray thee; lo, the declining of the day! lodge here, and let thine heart be glad -- and ye have risen early to-morrow for your journey, and thou hast gone to thy tent.'

My life is like a declining shadow, and I am withering like a plant.