Old vs. New Covenant
Two women, two sons, two cities, two covenants — but underneath, two conditions of the heart. Here's Paul's allegory laid out in full, the way Henry Marte walks through it.
OLD COVENANT
Hagar · bondage · flesh
- The promise of man: "All that the LORD hath spoken we will do" (Ex. 19:8)
- Made with an unchanged heart — sincere but powerless
- Self-effort: trying to finish God's promise (Ishmael)
- A city "built by human hands, with bricks"
- "Ropes of sand" — empty resolutions
- Result: bondage, condemnation, falling from grace
- Roots back to Eden: Adam & Eve sewing fig leaves; Cain
NEW COVENANT
Sarah · freedom · promise
- The promise of God: "A new heart will I give you" (Ezek. 36:26)
- God writes the law on the heart — "I will… I will…"
- All of God: He fulfills His own promise (Isaac)
- "Jerusalem which is above is free… the mother of us all"
- Built by God — "nobody laid a brick"
- Result: liberty to serve God "in spirit and in truth"
- Lived by Abraham & Abel — long before Sinai
The one thing to remember
Condition, not time
"The two covenants are not a matter of time, but of condition" (E.J. Waggoner). Both have existed since sin entered the world. You can live under the Old Covenant today — handing God your own sincere-but-empty promises — while assuming you're safely "New Testament." The dividing line isn't the calendar; it's whether you have a new heart.
The test question
Marte boils the whole distinction down to a single diagnostic — whose promise is your Christian life resting on?
Old Covenant heart
- "I will do better."
- "I promise to obey."
- Standing on my resolutions
- = sand
New Covenant heart
- "God will give me a new heart."
- "He will write His law in me."
- Standing on His promises
- = rock
Sam says
Both columns may look obedient on the outside, friend — that's the tricky part. The Old-Covenant person can be very moral, very sincere, very busy keeping rules. But it's built on sand because it's built on self. The New-Covenant person obeys too — only it's the fruit of a heart God remade. Same actions, opposite foundations. Check the foundation, not just the behavior.