Prayer is an appeal to a supernatural power (to one or another), which is usually done by way of expressing a wish, or as a regular prayer in the context of religious worship, expression of gratitude, or even as a discourse, in which man pours out his heart to the Supreme Being. Among the contents of the prayer can be found a request for guidance and assistance, a confession of deeds and a request for forgiveness, a request for help in time of need or longing for the fulfillment of wishes, as well as an expression of feelings of praise and gratitude upwards. In Hebrew there are the expressions “outpouring of the soul” as well as “work in the heart” to express the essence of prayer. The words of the prayer may be in the form of a hymn, mantra, magical words, and even spontaneous sayings of the worshiper. The prayer can be performed in a group or privately. Prayer has been common in all religions and cultures and has been known to mankind since the dawn of history. Psychological studies have found a beneficial effect of prayer on the worshiper.