According to the temptation narratives in the gospels according to Matthew and Luke, Jesus overcome Satan because He

According to the temptation narratives in the Gospels of Matthew and Luke, Jesus overcame Satan because He depended on the word of God. After Jesus was baptized by John the Baptist, He went into the wilderness to fast and pray for 40 days and nights. Satan then came to Him and tempted Him in three ways. In each temptation, Satan tried to get Jesus to sin, but Jesus responded with a quote from the Scriptures, saying "it is written." Jesus was able to overcome Satan's temptations because He depended on the word of God, which gave Him the strength and wisdom to resist the devil. Therefore, it was Jesus' dependence on the word of God that helped Him to overcome Satan in the wilderness.