If any man love not the Lord Jesus Christ, let him be Anathema. -1 Cor 16:22
Charles Hodge comments:
If our Lord be “God over all and blessed for ever,” want [lack] of love to Him is the violation of our whole duty. If He be not only truly God, but God manifested in the flesh for our salvation; if He unites in Himself all divine and all human excellence; if He has so loved us as to unite our nature to His own, and to humble himself and become obedient unto death, even the death of the cross, that we might not perish, but have everlasting life; then our own hearts must assent to the justness of the malediction [curse] pronounced even against ourselves, if we do not love Him.