Matthew 4:4 - Matthew Poole's English Annotations on the Holy Bible

So also Luke 4:4. There is no better answering the tempter than by opposing the precepts of holy writ to his motions to sin. The word is called the sword of the Spirit, Ephesians 6:17. The papists, therefore, denying people the use of the word, disarm them as to the spiritual combat. It is written Deuteronomy 8:3. Though man ordinarily liveth by common bread, such food as men usually eat, yet God's power is not restrained, he can uphold the life of man when that is wanting, as he supported the Israelites by manna (to which that text relates); nor is God obliged to create any extraordinary means, for his power, which is seen in creating such means, can produce the same effect without such means if it pleaseth him. His power must be seen in creating the means, and in upholding the proper power and faculty of the means, in order to their end; why cannot he by the same power produce the effect without any such means?