Let's bear in mind that ritualized human sacrifices in the ancient world (including in the Fertile Crescent) to various deities were not uncommon at that point in time, so the fact that Abraham went along with it shouldn't be too surprising. What is significant therefore is not the fact that the God of Abraham commanded him to sacrifice his child, but that He told him (in the nick of time, as it were) it wasn't necessary -He merely wanted rock-hard proof that Abraham was loyal to Him, and Him alone. He never again asked it of anyone.
He may not have asked his followers to sacrifice their children again. He certainly demanded they mass murder children of other nations.
That hardly distinguishes the Hebrews of the time. Destroying cities and their peoples and property was a commonplace practice of conquerors, whether it is the Egyptians, the Hittites, the Assyrians, or the Babylonians -or any other expanding empire. If you resist, we destroy you.