Believing on Jesus is not just a mental consent that Jesus is the Son of God, it is believing with all your heart that Jesus will be your own saviour from your own sins, when you call upon him and trust him. It is putting all your faith in him alone and not in anything you can do yourself at all, like turning over a new leaf, repenting of sins, etc. It is all by God's grace completely and we are totally undeserving of the gift of salvation. Acts 8:37: And Philip said, If thou believeth with all thine heart, thou mayest. And he answered and said, I believe that Jesus Christ is the Son of God. The bible says you must believe in thine heart. Salvation is a personal decision. As an individual you must receive it for yourself. Acts 16:30-31: And brought them out, and said, Sirs, what must I do to be saved? 31: And they said, Believe on the Lord Jesus Christ, and thou shalt be saved, and thy house. Notice how it says what must I do. The Word of God describes salvation on an individual basis. The verses below states "your sins," "thy transgressions," and "thy sins".
Isaiah 1:18: Come now, and let us reason together, saith the LORD: though your sins be as scarlet, they shall be as white as snow; though they be red like crimson, they shall be as wool.
Isaiah 43:25: I, even I, am he that blotteth out thy transgressions for mine own sake, and will not remember thy sins.
Salvation is a choice that every person in the world must make. You cannot be neutral about Jesus. You must decide for yourself what you will do with him. If you choose not to accept him as your saviour, then you are making a choice to reject him. There is no middle ground, Jesus said you are either for me or against me." Luke 11:23: He that is not with me is against me: and he that gathereth not with me scattereth.
Some people reject Jesus as their personal saviour because they are holding onto some form of religion or some type of church traditions that they have been raised in. So they reject Christ because they would rather trust in their church. They reason that if that is what their church says, their church must be right because they talk about God and Jesus. There are many false religions in the world that use the name of God and Jesus, but they speak not of him in truth. Jesus said in John 14:6, I am the way, the truth, and the life. No man cometh unto the father but by me. So you see, Jesus is the truth, not church traditions.
Mark 7:8: For laying aside the commandment of God, ye hold the tradition of men, as the washing of pots and cups: and many other such like things ye do.
Mark7:9: And he said unto them, Full well ye reject the commandment of God, that ye may keep your own tradition.
The bible even says that there will be some who preach another Jesus. 2 Corinthians 11:4: For if he that cometh preacheth another Jesus, whom we have not preached, or if ye receive another spirit, which ye have not received, or another gospel, which ye have not accepted, ye might well bear with him.
Churches do not save, religion does not save, only Jesus saves. Won't you come unto him today, trust him with your whole heart, and receive the wonderful gift of salvation. Ephesians 2:8-9: For by grace are ye saved through faith; and that not of yourselves: it is the gift of God: 9: Not of works, lest any man should boast.