A short definition of each, and where it leads. Some already have their own room; the rest are being written.
The hinge
Grace
Unearned favor — help and forgiveness given freely rather than deserved or bought. The idea the whole tradition turns on: that reconciliation with God is a gift received, not a wage worked for.
→ The gift you can't earn.
The problem
Sin & the Fall
The condition grace answers: a world made good but turned away from its source, and human hearts bent in on themselves. Not merely rule-breaking — a broken relationship in need of mending.
→ The turning-away that sets the story going.
The audacious claim
The Incarnation
That God became flesh — fully divine and fully human in one person, Jesus of Nazareth. The move that makes Christianity strange: not a God who sends a message, but a God who shows up.
→ The Word made flesh.
The center
The Cross & atonement
Where Christianity locates its answer to suffering and sin: a God who enters the worst of it rather than explaining it away, and by doing so reconciles humanity to himself.
→ The wound God chose to share.
The love
Agape
Self-giving love that seeks the good of the other without condition — the love Christianity says God is, and the standard it holds up for human life. Later, a natural partner to Buddhist metta.
→ Love that gives itself away.
The posture
Kenosis & surrender
“Self-emptying” — the giving-up of one's own grip, modeled on Christ and voiced in “thy will be done.” Christianity's version of letting go, and a bridge to wu wei and equanimity.
→ Releasing the grip, on trust.
The paradox
The Trinity
One God in three persons — Father, Son, and Holy Spirit — distinct yet fully and equally God. Christianity's most distinctive and most argued-over doctrine.
→ One divine life, three persons.
The self
That each person is made in God's image — the ground of human dignity — and carries a soul that outlasts the body, awaiting resurrection.
→ Explored in Do we have a soul?