“Where is it “in the text ?”
Where does Scripture say it is inspired and sufficient for salvation, Christian maturity, etc.? Seriously, you have to ask? There is no other God-breathed source.
“Which Church precisely ?”
Christ’s gathering - comprised of every local assembly anywhere on earth, formed of those who’ve entrusted themselves to His sacrifice alone for salvation. There is no other.
Christs gathering - comprised of every local assembly anywhere on earth, formed of those whove entrusted themselves to His sacrifice alone for salvation. There is no other.
No names; I guess that includes all 30,000 or so denominations and sects, possibly a few cults, which puts us right back in the problem of church anarchy. If a person "trusts himself to His sacrifice alone for salvation" he might go to any of those, or even the cults unless he gets someone to name names for him.