Made a conspiracy - He no doubt became very unpopular after having lost the battle with the Israelites; the consequence of which was the dismantling of Jerusalem, and the seizure of the royal treasures, with several other evils. It is likely that the last fifteen years of his reign were greatly embittered: so that, finding the royal city to be no place of safety, he endeavored to secure himself at Lachish; but all in vain, for thither his murderers pursued him; and he who forsook the Lord was forsaken by every friend, perished in his gainsaying, and came to an untimely end.
After the time - The writer means that the violent death of Amaziah followed on his apostasy, not closely in point of time - for it must have been at least 15 years after 2 Chronicles 25:25 - nor as, humanly speaking, caused by it; but, in the way of a divine judgment, his death was a complete fulfillment of the prophecy of 2 Chronicles 25:16.