Judah Ben Hur is being dragged off to the slave galleys through a hot desert, and is refused water by the Roman guards. Praying to God, a shadow passes over Judah: it's a local carpenter's son, who silently offers water to Judah. A guard tries to stop the young Man from helping Judah, but the Roman sees something in the Man's face that makes him turn away in awe.
This dialogue after Judah comes back from Jesus' crucifixion, and also the final lines of the movie:
Judah: Almost at the moment He died, I heard Him say, "Father, forgive them for they know not what they do."
Esther: Even then.
Judah: Even then. And I felt His voice take the sword out of my hand.