In what language is "believe" not a verb? People say, "I believe Jesus." Pronoun-verb-proper noun.
On topic, "whoever believes" means all a person needs to do is just that - believe.
The ones that say "just believe on Him and your saved". Because thats not true. For one, they need to repent. Two, they need to confess. Three, they need to be baptized.
The Greek word for baptized
Baptizo-
- to dip repeatedly, to immerse, to submerge (of vessels sunk)
- to cleanse by dipping or submerging, to wash, to make clean with water, to wash one's self, bathe
- to overwhelm
Acts 8:36-39 gives a good example of what happens when you inherently preach Christ to people. "look, here is water. What hinders me?" The enunch got baptized in water.
Titus 3:5 - washing of regeneration
1 Peter 3:20-21 - 8 souls saved by water; baptism now saves you - not just by washing yourself, but a good conscience toward God.
Acts 22:16 - arise WASH AWAY your sins
Acts 2:38 - repent, be baptized FOR the remission of sins and you get the Holy Spirit
Galatians 3:27 - everyone that gets baptized, puts on Christ
Romans 6:1-5 combined with 1 Corinthians 15:1-5
Theres more. But do I really need more to convince someone of baptism's necessity?
Mark 16:16 - believe AND be baptized to be saved. AND joins both words together as needing to be done for salvation.
I mention all these because people just want it to be "I believe" (noun-idea-I said a word and so it must be true) and thats it. It doesnt work that way according to scripture. Hebrews 11 is full of people who were put to action and James 2 connects with it.
So again, I refer to the ones that just say "I believe" but commit nothing else to it other than words, thinking they are saved.