A pentagram is a five pointed star drawn with continuous lines.
As a religious symbol,
in Christianity it represents the five wounds of Christ
in the three Abrahamic religions (ie: Christianity, Islam, Judaism) it can represent the five senses
and is often called "The Seal of Solomon"
The pentagram in its Christian meaning was the heraldry of Sir Gawain, one of the knights of the Round Table
Today, it appears on the flag of Morocco as "The Seal of Solomon"
It is also used by Rock and Roll groups as a symbol for things parents will find shocking (ie: Satan or Witchcraft)
and it is used by teenagers who want to claim some intense and shocking allegiance to shock their parents or be cool before their friends.
So --
it can symbolize King Solomon
it can symbolize Jesus
and it can symbolize Satan
Whichever one you want.