1 John 4:1-6
1 Beloved, believe not every spirit, but try the spirits whether they are of God: because many false prophets are gone out into the world. 2 Hereby know ye the Spirit of God: Every spirit that confesseth that Jesus Christ is come in the flesh is of God: 3 And every spirit that confesseth not that Jesus Christ is come in the flesh is not of God: and this is that spirit of antichrist, whereof ye have heard that it should come; and even now already is it in the world. 4 Ye are of God, little children, and have overcome them: because greater is he that is in you, than he that is in the world. 5 They are of the world: therefore speak they of the world, and the world heareth them. 6 We are of God: he that knoweth God heareth us; he that is not of God heareth not us. Hereby know we the spirit of truth, and the spirit of error.
Only visions, prophecies, and dreams that come from God are true. If a prophecy denies or brings unbelief to the Word of God, that prophecy is not of God. If a prophecy will cause us to distance ourselves from our relationship with God, then this prophecy is not of God and is either coming from our own sinful heart or a satanic spirit.
God is the only one that can pronounce the future. God loves us and reveals the future to us through prophecies to have us draw closer to Him. There are endless examples in the Bible that show us that God's prophecies, dreams and visions are given by God to bring us into a closer relationship with Him. We on the other hand must want to seek to know God to discern what is a false vision and what is a godly vision.
Jeremiah 23:16, “Thus saith the Lord of hosts, Hearken not unto the words of the prophets that prophesy unto you: they make you vain: they seek a vision of their own heart, and not out of the mouth of the Lord.”
To answer your question: Can a vision never occur?
Yes and NO. A vision for our life is not the same thing as a promise that God has directly giving us, for we know that God is a promise keeper, however a vision can change by what you do in your daily walk with God. Exp. God shows you a vision that you will become a great CEO of an amazing Ministry one in one year. In God’s eyes the vision has already come to past, (Matthew 6:10) May your will be done on earth, as it is in heaven. But now it’s up to us to make it happen here on earth, but if for the next year you sit at home and do nothing the only vision that’s coming to past is the one you had when you was eating that pizza on the couch, “I’m getting FAT”,
so the question is not can a vision never occur? The question becomes,
Am I working towards God’s vision for my life?
"Living to Fulfill my Purpose"