I see you have attracted the usual gang of unbelievers who will
attempt to convince you that unbelief is Godly, even a badge of honour.
In your question you use the word 'believers'
herein lies the crux of the problem, for not all believe.
These verses get to the heart of belief and unbelief.
It begins here.
15 And he said unto them, Go ye into all the world, and preach the gospel
to every creature.
16 He that believeth and is baptized shall be saved; but he that believeth not
shall be damned.
17 And these signs shall follow them that believe;
In my name shall they cast out devils;
they shall speak with new tongues;
18 They shall take up serpents; and if they drink any deadly thing, it shall not hurt them;
they shall lay hands on the sick, and they shall recover.
19 So then after the Lord had spoken unto them, he was received up into heaven,
and sat on the right hand of God.
20 And they went forth, and preached every where, the Lord working with them,
and confirming the word with signs following. Amen.
Mark 16:
What do "Christians" believe?
That all scripture is true?
That the promises of God are true?
That originally there was only one gospel, one way?
That the indwelling Holy Spirit is the power of God residing within
a disciple?
That healings and miracles are for today as children of our Father in Heaven.
6 And the people with one accord gave heed unto those things which Philip spake,
hearing and seeing the miracles which he did.
7 For unclean spirits, crying with loud voice, came out of many that were possessed
with them: and many taken with palsies, and that were lame, were healed.
8 And there was great joy in that city.
Acts 8:
In my Pentecostal Fellowship we have a 100% rate of miracles and healings.
From small injuries and minor hurts to significant and in some cases fatal
diseases and conditions.
Not everyone is healed instantly and not everyone is healed to full recovery
for that is still a matter of faith and of one's walk with the Lord.
Sometimes even the Spirit-filled saint needs to re-evaluate their approach
to God and faith.
But in my Fellowship miracles and healings are the norm.