The people threatened Prophet Ibraheem that if he didn’t worship their false gods he will be destroyed. Ibraheem `alayhi salaam said, among the proofs to the falsehood of your creed, is that these false gods that you worship do not bring about any effect, and I do not fear them or care about them. Therefore, if these gods are able to cause harm, then use them against me and do not give me respite. Ibraheem’s statement, “Unless my Lord should will something,” means only Allah causes benefit or harm. Allah’s knowledge encompasses all things and nothing escapes His complete observation.