The man kept asking for bread because he felt that having those loaves in his possession was absolutely necessary to carry out his duty as a host. Without bread, he would fall short.
( ಯೆಶಾಯ 58: ​ 5 - 7) ಆ ರೊಟ್ಟಿ ಇಲ್ಲದಿರುತ್ತಿದ್ದಲ್ಲಿ ಅವನು ತನ್ನ ಕರ್ತವ್ಯವನ್ನು ಪಾಲಿಸಲು ಆಗುತ್ತಿರಲಿಲ್ಲ.