Love the LORD your God with all your heart and with all your soul and with all your heart and with all your strength.  Deuteronomy 6:5

Love your neighbor as yourself.  Matthew 22:39

A new command I give you:  Love one another.  As I have loved you, so you must love one another.  By this all men will know that you are my disciples, if you love one another.  John 13:34-35

Go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit and teaching them to obey everything I have commanded you.  Matthew 28:19-20

All above texts taken from the New International Version or NIV Bible.