Satan is an angel who rebelled against God and was kicked out of heaven. One third of the angels rebelled with him and were also expelled. Satan leads these fallen angels, also called demons, in his quest against God and his people. They oppose followers of Jesus and attempt to thwart God’s plans.
As an angel, Satan is a created being and therefore not equal in power or stature to God. Despite this, some wrongly view God and Satan as having comparable power.
Satan is called by many names in the Bible, including the dragon, serpent, devil, evil one, accuser, adversary, and enemy.
Some people deny the existence of Satan, while others cower in fear. A more balanced attitude is to accept his existence, realize he has power, but focus on God who is more powerful and will prevail.