Read: Luke 4:1-13
The devil said to him, "If you are the Son of God, command this stone to become bread." (Luke 4:3 ESV)
Jesus was tired and hungry when Satan came to tempt him. He had been fasting for forty days after being led into the wilderness by the Holy Spirit. Physically he was probably weakened. But Jesus showed us through his actions that physical strength can never account for spiritual strength.
It really is just like the enemy of our souls to come at us when we're already weak. He is sneaky like that. However, like Jesus we can stand on the reality of whose we are. Jesus is the Son of God, and the devil was trying to cast doubt on that. You are a son or daughter of God too, and the devil will no doubt attempt to cast doubt on that. Still, it is the truth of God's Word and our identity in Him that thwarts the enemy's plans for our lives.
Sometimes he sneaks in and tries to make something that's really bad for us look good. Kind of like trying to turn a stone into bread. Jesus could have done that, but he didn't need to. We probably couldn't turn a stone into bread, but if we're not careful in guarding our hearts we may let the devil trick us into thinking we need to.
The simple truth is that we don't need stones to become bread. We don't need whatever distraction the enemy offers us, now matter how enticing. All we need is to know who's son we are.