'Beacon' in the Bible

But Zeruiah's son Abishai came to David's aid, attacked the Philistine, and killed him. After this, David's army told him, "You're not going out anymore with us to battle, so Israel's beacon won't be extinguished!"

One thousand shall flee at the rebuke of one; at the rebuke of five shall ye flee: till ye be left as a beacon upon the top of a mountain, and as an ensign on an hill.

Therefore I cut them to pieces by the prophets, killing them by the words from my mouth. The verdict against you shines like a beacon.