Crossing oneself is a religious act of making the sign of the cross over one's body. It is a common practice in Christianity and is done to symbolize the Holy Trinity- God the Father, Son, and Holy Spirit. There are several synonyms for "crossing oneself" including signing oneself, making the sign of the cross, blessing oneself, and crossing one's heart. These phrases are used interchangeably and have the same spiritual significance. However, the manner of performing the act may vary across different religions. While some may make a small cross on their forehead, others may make a larger one over their entire body or simply raise their hand and cross their fingers.