Abiathar told David that Saul had killed the priests of the Lord.

(For this reason, to this very day, neither Dagon’s priests nor anyone else who enters Dagon’s temple step on Dagon’s threshold in Ashdod.)

Then the king said to the messengers who were stationed beside him, “Turn and kill the priests of the Lord, for they too have sided with David! They knew he was fleeing, but they did not inform me.” But the king’s servants refused to harm the priests of the Lord.