What is the Biblical basis for saying that God can annihilate human souls?

We know that God is love and He is merciful. However, the idea of eternal torment seems too horrifying and doesn't seem to be in parallel with the nature of God. My argument is that, if God were capable of annihilating the soul, He would have done it long ago. Annihilating Adam and Eve would stop all these countless people going to Hell. It is not just at all if God allowed only a few to enter Heaven and the majority suffer eternal torment. **Why can't God simply make us all vanish? Maybe because God is not able to!** Perhaps this is the reason why God had to sacrifice His one and only Son for us, who was flogged, tortured, mocked, crucified and died, only with the hope of saving some souls. Moreover, the idea of annihilation seems appealing as it gives hope to the unsaved souls. However, I still have trouble with this theology because I can't find any reference from the Bible that God can annihilate the soul. **According to Annihilationism, what is the Biblical basis that God can annihilate the soul? Which verses do they use and what is their interpretation?**