To believe in God is necessary to having religious faith. Scripture says that believing in the true God is foundational to a relationship with Him: “Without faith it is impossible to please God, because anyone who comes to him must believe that he exists and that he rewards those who earnestly seek him” (Hebrews 11:6). Genuine belief in God is based on who He really is.
To believe in God is to believe that He is, and that His Word is true. Of course, this has implications for our day-to-day life. Having faith means that you build your life on God’s Word; you conduct yourself according to God’s Word and reckon that God, who has said it, guides everything and is a rewarder.