As you have been told, and should have already known, the Mandate for Palestine expired at midnight 14 May 1948. From that moment it was no longer an instrument of international law. You are wrong, but I think you knew you were wrong, but wrote it anyway, hoping to deceive. UN 181 was a GA resolution, but when it passed it was referred to the Security Council to determine if during the transitional period the situation in Palestine constituted a threat to peace, and, if so, whether the SC should supplement the authorization of the GA. The SC did so invoking article 39 to stop any attempt to alter the resolution. One can only speculate about your powers of retention, but again, Part II of UN181 permitted Israeli sovereignty only within precisely delineated borders spelled out in meticulous detail. Therefore, all lands occupied by Israel in 1967 are occupied illegally, and that includes your "biblical heartland." UNSC 242 calls for Israel to withdraw from all "occupied" territory.
Opposition leader Isaac Herzog calls on government to allow Syrian refugees into Israel (Haaretz)
from the article: Comment / Israel delegitimizers threaten its existence