King James Version (KJV) - 1 Samuel 28:18 >

Because thou obeyedst not the voice of the LORD, nor executedst his fierce wrath upon Amalek, therefore hath the LORD done this thing unto thee this day.

Berean Study Bible (BSB) - 1 Samuel 28:18 >

Because you did not obey the LORD or carry out His burning anger against Amalek, the LORD has done this to you today.