Title: Two Stones Swingin’ in the Lord’s Chain Gang

[Verse 1]
Got one stone for the Law, hangin’ heavy in my hand,
Old Moses done wrote it down, said “Boy, you better understand.”
It’s a burden and a witness, like the weight of iron chain,
But without that first foundation, son, your gospel train won’t reign.

[Chorus] (call & response)
(Leader) Two stones swingin’, side by side,
(Gang) Law and Grace in the same ol’ stride,
(Leader) One was given on a mountain high,
(Gang) One was bought when my Lord did die.
Two stones swingin’, swingin’ low and free,
Old one held me bound — but the new one set me free.

[Verse 2]
Second stone is humble, hangs lower in my soul,
It don’t fight against the first, it just makes the circle whole.
That’s the New Blood covenant, from the cross down to the grave,
Ain’t no legal title stronger than the mercy Jesus gave.

[Chorus]
Two stones swingin’, side by side,
Law and Grace in the same ol’ stride,
One was written, carved in stone,
One was planted in my heart alone.
Two stones swingin’ in the heat and rain,
Pullin’ faith like a mule in the Lord’s chain gang.

[Bridge – Spoken Blues Moan]
Now, you can talk ‘bout deeds, you can talk ‘bout pay,
You can talk ‘bout workin’ off your debt someday…
But I done learned this truth down deep in my soul:
That first stone points you, but the second makes you whole.

[Verse 3]
Old one stands like a judge, with a gavel in his fist,
New one bends down low, says “Child, I’ll give you this —
Freedom in the Spirit, not by paper, seal, or name,
You ain’t got to wear no chain for the devil’s gain.”

[Final Chorus]
Two stones swingin’, side by side,
Law and Grace in the same ol’ stride,
One was shadow, one was light,
One gave the sentence, one made it right.
Two stones swingin’ where the river runs deep,
Grace done bought my soul — now the Law can sleep.

This can be sung slow and heavy like an old Mississippi chain gang chant, with stomps and hammer clangs for rhythm.
The “two stones” imagery works as both the physical allegory you wanted and the covenantal shift from Old to New Testament — first the Law’s authority, then Grace’s release.