כִּ֣י הַמַּגִּיד֩ לִ֨י לֵאמֹ֜ר הִנֵּה־מֵ֣ת שָׁא֗וּל וְהֽוּא־הָיָ֤ה כִמְבַשֵּׂר֙ בְּעֵינָ֔יו וָאֹחֲזָ֣ה ב֔וֹ וָאֶהְרְגֵ֖הוּ בְּצִֽקְלָ֑ג אֲשֶׁ֥ר לְתִתִּי־ל֖וֹ בְּשֹׂרָֽה׃
Rashi on II Samuel
He thought I would reward him for his good tidings. He thought he was making me happy in order that I should reward him for his good tidings.