4. Give us this day our daily bread. Because our natural being is necessary to our spiritual well-being in this world, therefore, after the things of God's glory, kingdom, and will, we pray for the necessary supports and comforts of this present life, which are the gifts of God, and must be asked of him, Ton arton epiousion--Bread for the day approaching, for all the remainder of our lives. Bread for the time to come, or bread for our being and subsistence, that which is agreeable to our condition in the world (Pr 30:8), food convenient for us and our families, according to our rank and station.
Every word here has a lesson in it: (1.) We ask for bread; that teaches us sobriety and temperance; we ask for bread, not dainties, not superfluities; that which is wholesome, though it be not nice. (2.) We ask for our bread; that teaches us honesty and industry: we do not ask for the bread out of other people's mouths, not the bread of deceit (Pr 20:17), not the brad of idleness (Pr 31:27), but the bread honestly gotten. (3.) We ask for our daily bread; which teaches us not to take thought for the morrow (Mt 6:34), but constantly to depend upon divine Providence, as those that live from hand to mouth. (4.) We beg of God to give it us, not sell it us, nor lend it us, but give it. The greatest of men must be beholden to the mercy of God for their daily bread, (5.) We pray, "Give it to us; not to me only, but to others in common with me." This teaches us charity, and a compassionate concern for the poor and needy. It intimates also, that we ought to pray with our families; we and our households eat together, and therefore ought to pray together. (6.) We pray that God would give us this day; which teaches us to renew the desire of our souls toward God, as the wants of our bodies are renewed; as duly as the day comes, we must pray to our heavenly Father, and reckon we could as well go a day without meat, as without prayer.
Source: Matthew Henry's Commentary on the Whole Bible Volume V (Matthew to John)