Punishment On The Nation Of Prophet Abraham (sws)
The enmity as you can see is that believers do not like the kufr of the people and the kafir wants to kill them (Ibrahim’s own father wanting to stone him to death). That’s the enmity that Hazrat Ibrahim is pointing out, that they have reached a point of no compromise, making it impossible for believers in stay in the nation and extends his hands towards the kafir one last time to come back to God so there can be peace. Most of the time, kafir rejects this final statement and then the Messenger leaves. It is not extra time or any different in any Rasuul’s case. Just that Qur’an tends to show this same process in different way, sometime a Rasuul might use a different phrase. But there is nothing unique in Hazrat Ibrahim’s case, all messengers offer a last statement before they finally depart which would mean “If you aren’t gonna take advantage of Allah’s tolerance after all this time and come back to Him then it’s over between us, we’ll finally leaving.”