Well Bible clearly teaches there is one God and it also clearly teaches that Jesus was God's incarnate. Furthermore, Bible teaches that God is both all just and all loving. How can someone be all just and all loving? Well, you find the answer at the foot of the Cross. The old testament and new testament when read in context complement each other. God hasn't changed. He's the same yesterday, today and forever. He's still angry at sin and sinners and that's why thousands die everyday because the wages of sin is death as the Bible clearly teaches.