We are to love the Lord with all our heart. We are to love our neighbors as ourselves. When we yield to bitterness we will have a hard time with this one. 1 Corinthians 13, tells us that love is the foundation upon which all our relationships are to be built. First with our Creator and then relationships with others.
Jesus said unto him, Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind.
This is the first and great commandment
And the second is like unto it, Thou shalt love thy neighbour as thyself.On these two commandments hang all the law and the prophets.