Genesis 19:16

‘But he hung back, and the men seized his hand, and the hand of his wife, and the hands of his two daughters, Yahweh being merciful to him, and brought him out and placed him outside the city.'

Lot was still not sure. He did not want to leave behind what he had gained through years of toil and effort. But Yahweh had mercy on him. He would not leave him to die. The angels took the family forcibly to the outside of the city. And there Yahweh Himself speaks to him. The change from ‘they' to ‘he', as in Genesis 18, demonstrates a moment of revealing. Now Yahweh Himself takes over Lot's fate.