In simple words Kabbalah teaches we either are in the state of security and as we have a natural desire to love people therefore also in the state of love, and as all desires are irrational, therefore we don’t do anything that will contradict our desire, unless we turn to the state of insecurity, and fear based on negative experiences and then because we desire security we begin to see evil in others as it’s a way of showing us like danger signs, then we often begin to hate people, because we hate what we fear, and we become jealous of kind people, because we’re jealous of love and joy