Confess and God abides (1 John 4:15)
There's a saying "seeing is believing." However, Jesus said "'you have seen Me and yet do not believe'" (Jn 6:36). "He who comes to God must believe that He is and that He is a rewarder of those who seek Him" (Heb 11:6). "Believe in your heart that God raised Him from the dead, you will be saved" (Ro 10:9). How do you hear with your heart? "'If anyone hears My voice and opens the door, I will come in to him'" (Rev 3:20). Communication is "inspired by God" (2Ti 3:16). "The Spirit Himself testifies with our spirit" (Ro 8:16). When Peter heard, Jesus said, "'flesh and blood did not reveal this to you, but My Father who is in heaven'" (Mt 16:17). It is by "faith which comes through Him" (Ac 3:16). "Faith comes from hearing, and hearing by the word of Christ" (Ro 10:17). Therefore it is "by grace you have been saved through faith; and that not of yourselves, it is the gift of God" (Eph 2:8-9). But when you hear the sayings you must "'act on them'" (Mt 7:26). Otherwise you will be like "'those who have heard; then the devil comes and takes away the word from their heart, so that they will not believe and be saved'" (Lk 8:12).
Believing is positive and not passive. It reflects that you are a "new creature; the old things passed away; behold, new things have come" (2Co 5:17). You have been delivered from "the domain of darkness, and transferred . . . to the kingdom of His beloved Son" (Col 1:13). It is essential that it be expressed. "Whoever confesses that Jesus is the Son of God, God abides in him, and he in God" (1Jn 4:15). Confession is made "resulting in salvation" (Ro 10:10). "'Therefore everyone who confesses Me before men, I will also confess him before My Father who is in heaven'" (Mt 10:32).