A "true" religion must have these qualities:
A true religion must be universal.
A true religion's wisdom must be available to anyone at any time for any circumstance.
A true religion must not be subject to a material identity.
to an extent, i would both agree and disagree.
the conclusion of spiritual universalism, and general revelation is common to many faiths. essentially, that there is a Something we long to connect to, in Which we live and move and have our being, of Which we are already a part. that philosophy is found, in various forms, within Hinduism, Islamic mysticism, pantheism, and in various other forms.
it's not a difficult conclusion to come to intellectually or spiritually, and all of the world religions have basically expressed this conclusion in one way or another.
uniquely, the Son of God teaches us that is is not Something, but Someone our heart are restless for. not only this, but in Himself He offers us a way to walk with that Someone, know Him personally, become His child, and enjoy His company and guidance and love. not in abstract connection or awareness, but in intimate, personal communion.
to be mentally / intellectually aware of God's existence and presence, and the general existence of some relationship of self to God is not impossible for humans. but to bridge that puzzling existential gap between selfhood and the Absolute, is not something we can do on our own.
from a Christian perspective, there is a unique, exclusive, incarnate message and person who does bridge that gap.