For a Retribution Paladin in Midnight, the best current weapon enchant is Enchant Weapon - Acuity of the Ren'dorei. It is the top recommendation in multiple Midnight-era build guides and is also the most popular weapon enchant in live data for Retribution Paladins.

What to pick

  • Main choice: Acuity of the Ren'dorei for general PvE use.
  • Alternative: Jan'alai's Precision shows some use, but far less than Acuity in the data I found.
  • If you want the simplest answer: go with Acuity of the Ren'dorei.

Why this one

The Midnight guides I found place Acuity at the top for weapon enchants, and current data sites show it dominating Retribution Paladin builds in both Mythic+ and overall enchant usage. That makes it the safest all-around pick unless a future tuning pass changes stat values.

Quick note

If you want the exact best setup for raid vs Mythic+ , the rest of the enchant package can shift a bit, but the weapon enchant recommendation stays centered on Acuity in the sources I checked.

TL;DR: use Acuity of the Ren'dorei on your weapon.