Is a pentacle bad or is it to do with gods doings or it it witchcraft?

A pentacle is a circular disk with the symbol of a pentagram inscribed upon it. It is a ritual too used by witches to 'charge" objects.

A Pentagram is a star symbol whose points are interconnected by lines. To draw a pentagram you start at any "point" of the star but for this purpose we will say start with the top point and without lifting your pen from the paper continue drawing the start by drawing down to the bottom left point them diagonal to the middle right point then horizontal to the middle left point then diagonal and down to the right to the bottom right point then up to close the star at the top point.

A Pentagram may or may not have a circle drawn around the the star.

The pentagram is a symbol that represents the 5 elements. earth air fire water and spirit. It may also be used to represent the human form.