Now divide John 3:5 with...
Ezekiel 36: 25 Then I will sprinkle clean water on you, and you shall be clean; I will cleanse you from all your filthiness and from all your idols. 26 I will give you a new heart and put a new spirit within you; I will take the heart of stone out of your flesh and give you a heart of flesh. 27 I will put My Spirit within you and cause you to walk in My statutes, and you will keep My judgments and do them.
Later, John the Baptist explains this in a way we can understand and that is that Jesus Baptizes people with "fire"... this is a person being indwelt with the Holy Spirit when they simply... BELIEVE in Jesus Christ. The instant that they believe in their heart and accept (declare) Jesus is the Son of God... they will be saved and they are officially Born-Again. Nothing is now stopping them from doing their first act or good work in faith with God. Get them WET, dunk em'!!!! In the name of the Father, Son, and Holy Spirit.
The topic of being Born-Again really doesn't involve a "water" Baptism. It's about belief in and accepting Jesus Christ as their Savior and then they "will be" saved. Evidence NEVER requires a "water" Baptism... just the same as evidence of a person who "will be" saved NEVER requires speaking in tongues. BOTH beliefs... that a person MUST be Baptized in water or the belief that a person MUST speak in tongues for them to be saved is on the SAME playing ground
... both these beliefs are FALSE doctrines.
Evidence of being Born Again, once a person has believed and accepted Christ is through fruit, not action! Doing a water Baptism in an ACTION of ones faith, it is a GOOD WORK done in faith. Even those WITHOUT faith in Christ can do this action, so this fact alone shows us that the action of a WATER baptism CANNOT be used as evidence that one will be saved because they are in Christ.
Only those who believe and accept Christ CAN show fruit and evidence that they will be saved. A water Baptism isn't fruit, it's a good work and we all know that good works DON'T SAVE you.
Here are some scriptures about evidence (fruit) that shows others that a person's belief and acceptance of Christ as their Savior will show that they will be saved:
1 John 2:29 If you know that He is righteous, you know that everyone who practices righteousness is born of Him.
1 John 3:9 Whoever has been born of God does not sin, for His seed remains in him; and he cannot sin, because he has been born of God.
1 John 4:7 Beloved, let us love one another, for love is of God; and everyone who loves is born of God and knows God.
1 John 5:1 Whoever believes that Jesus is the Christ is born of God, and everyone who loves Him who begot also loves him who is begotten of Him.
1 John 5:4 For whatever is born of God overcomes the world. And this is the victory that has overcome the world—our[a] faith.
1 John 5:18 We know that whoever is born of God does not sin; but he who has been born of God keeps himself,[a] and the wicked one does not touch him.