Jehovah/Yaweh (Lord/I Am) is our one and only God. There is no other. We are to love the Lord our God with all our heart, soul, and strength/might. This is the first and greatest commandment of all! God desires from us, His children, our undivided love and devotion. He wants us to love Him with our whole being...to love Him above all else even our own life. The whole Christianity boils down to one primary thing: Amo Dei = Love God! We must love God completely with all the affections, the will, the thoughts, the strength...with all we have and all we are at all times under all circumstances. Obviously, no one is capable of loving God perfectly all the time. This unattainable standard of all-encompassing love for God shows our desperate need for God's amazing, inexhaustible grace.
Jesus says in John 14:15, "If you love Me, keep My commands." Our obedience to God demonstrates our love for God. To love God is the priority of life. It should rule our hearts & thoughts and guide our decisions, words, and actions. This sincere, strong, superlative love for God is expressed through worshiping, serving, obeying, delighting in, and living for God. When we truly love God, we desire to know Him more and to please, honor, and glorify Him. And we will want to keep His Word/commandments in our hearts so that His Word will guide our thoughts, will, words, and actions.