“When the Pharisees heard that Jesus had silenced the Sadducees, they gathered together, and one of them, a scholar of the law tested him by asking, "Teacher, which commandment in the law is the greatest?" He said to him, "You shall love the Lord, your God, with all your heart, with all your soul, and with all your mind. This is the greatest and the first commandment. The second is like it: You shall love your neighbor as yourself. The whole law and the prophets depend on these two commandments." -Matthew 22:34-40
If we obey the first commandment, all the others easily follow. When we give God our all, He opens our eyes and minds and changes us. To love God with our everything, allows us to see the others in this world as to who they really are; our brothers and sisters, each created by the Lord. When we give God all our love, we open the valve that allows His love to flow back into us, and out into the whole world.