An example of prayer of supplication is "I cried unto the Lord with my voice; with my voice unto the Lord did I make my supplication." This refers to Psalm 142:1.
The word "supplication," which is found in both the Old and New Testaments, refers to the spirit and attitude of a person's prayer. A prayer of supplication is one that is truly in earnest, fervent and humble, submitting to God's will. Psalm 142:1, which refers to David's prayer when he was going through one of the darkest moments of his life, is a good example of this. David, who had been named the future King of Israel, was alone in a dark cave at that time.