"Love the Lord your God with all your heart and with all your soul and with all your strength and with all your mind"; and, "Love your neighbour as yourself." (New Testament Community Bible Experience (2011) NIV p26)
In Luke it says a teacher asked how to get eternal life. The answer is put forth: Love God and Love others. Jesus says "do this and you will live". John says elsewhere "whosoever believeth in Him shall have everlasting life." So it seems trusting in Jesus and loving Him (and others) are joined to each other. You can't love Him without true faith in Him and you can't have true faith in Him without loving Him (and inevitably others and even yourself - all made in His image).