answers to ur questions- 1.This whole world is a test for Muslims for da after life n so it was for Abraham.There is Satan who misguides us and who has already misguided you if u really were a Muslim. 2.Abraham had longed for a child n Allah had granted his wish when he was old n so when he had asked him to sacrifice what was the most closest thing to his heart and that was his son. 3.Allah didnt ask Abraham to sacrifice an innocent animal,Abraham had blindfolded himself and his son at da time of sacrifice and when the sacrifice was done Abraham removed the cloth he saw dat Allah had replaced his son wid a goat and his son was standing behind him.