When Jesus prayed, “Give us this day our daily bread,” He showed us God's interest in our daily physical welfare, in our economic well-being, in our jobs. He cares that we have sufficient food, clothing, and shelter for our needs. Moses told the Israelites, “For forty years the Lord led you through the desert, and your clothes and sandals never wore out.” (Deuteronomy 29:5, Good News Translation ) Our Father in Heaven has often provided food miraculously for His children. While Moses led the children of Israel in the wilderness, God gave them manna from heaven. (Exodus 16:14-15) Twice He created water from a rock for them. (Exodus 17:6; Numbers 20:8) He purified bitter water for them at Marah. (Exodus 15:23-26) Twice He gave them quail for meat when they tired of the manna. (Exodus 11:31-32; 16:11-13) Although His help is conditioned on our faith in Him and on our obedience to Him, it is clear He will make miracles to provide for His children. (Exodus 16:4) Here are a few more examples.
During a famine, a widow with just enough meal and oil for one last meal for herself and her son, used that last bit of food to feed Elijah the prophet. Because of her faith in the Lord, shown by obeying the prophet, the Lord blessed her so “there was food every day for Elijah and for the woman and her family. For the jar of flour was not used up and the jug of oil did not run dry, in keeping with the word of the Lord spoken by Elijah.” (1 Kings 17:15-16, New International Version)
Jesus created food for five thousand men (and their families) from five loaves of bread and two small fishes. After this multitude ate until they were full, the remnants were gathered and filled twelve baskets. This occurred near Bethsaida. (Matthew 14:16-21; Mark 6:33-45; Luke 9: 11-17; John 6:5-14). On another occasion at a mountain near the Sea of Galilee, Jesus created food for “four thousand men beside women and children” from “seven loaves and a few little fishes” (Matthew 15:32-38; Mark 8:1-9).
Jesus taught that "he that believeth on me, the works that I do shall he do also" (John 14:12). The following miracle is an example of this truth. Today, God is still powerful to make miracles like this for us, as He he did for His children of the Old Testament. Elder Carlos C. Revillo is one who believes on Christ, Who made this miracle for him.
At an important civic banquet for 350 guests, more than 1,000 people showed up. Elder Revillo was an LDS Area Authority Seventy of the Philippines Area at the time he wrote this story which was published in the Ensign in the January 2004 issue. He is a man of great faith and when his wife, while catering an important dinner, encountered more than 600 unexpected guests, he blessed the food for her. Here I let Elder Carlos C. Revillo tell his story:
... My wife was in charge of catering food for a special banquet to be attended by numerous city leaders and many high-ranking national officials. The host of the event instructed my wife to prepare food for 350 people, emphasizing repeatedly the importance of the occasion and of the invited guests.
“There were approximately 1,000 people in the hall, and more were still coming in.”
On the night of the banquet, the guests began to arrive. Soon the 350 reserved seats were filled. My wife had made allowance for additional guests, but these 25 extra seats were soon filled also. More people streamed in, joining those who were already standing and lining up on all sides of the hall. There were approximately 1,000 people in the hall, and more were still coming in.
My wife recalls what happened this way: “At that moment, I just wished to melt and disappear. I approached the hostess, and she too had the same feeling of desperation. Though I was nervous, I tried to stay calm and began praying fervently and silently: ‘Heavenly Father, please help me. I do not know what to do. Please don't forsake me.’ Then my husband approached me and whispered, ‘Don't be afraid. I will bless the food silently.’”
“Instantly, my fears were gone. I had no doubt that I could rely on the Lord. The dinner began. Eleven waiters replenished the food on the tables without ceasing as the banquet proceeded. After the affair, when the guests were gone, all the tables were still filled with food. And there was still food left in the kitchen—five big baskets full of leftovers. All the guests and visitors had been fed and satisfied. Once home, I went immediately to my room and poured out my soul in gratitude to Heavenly Father. My whole body shook and trembled as I cried. My sincere prayer had been answered. The power of the priesthood had been manifest. Truly the Lord will not forsake us if we strive to be righteous.” 
As members of The Church of Jesus Christ of Latter-day Saints. We believe that worthy male members who have received the priesthood, have received in essence, the same authority to act for God that Jesus gave to his Apostles and which they gave to other male members of the early Christian Church. We believe that God works miracles for those who have sufficient faith in Him, just as He did for the Apostles and other members of His Church at that time. Thus worthy male members have the authority to give blessings in the name of God. If their faith is sufficient and if the blessing is in accord with God's will, then God will make the miracle.
 All scriptures refer to the King James Version of the Bible, except where another translation is noted.