Contradiction with Galatians 5:13-15
This emphasizes love as fulfilling the law and seems to highlight that strife/wrath is contrary to love, whereas Colossians 1:8 speaks of love in the Spirit.
Galatians 5:13-15: For, brethren, ye have been called unto liberty; only [use] not liberty for an occasion to the flesh, but by love serve one another.
Contradiction with 1 John 4:20
Suggests a contradiction if love isn't visibly manifested towards brothers, while Colossians 1:8 speaks of love in the Spirit often taken as spiritual or intangible.
1 John 4:20: If a man say, I love God, and hateth his brother, he is a liar: for he that loveth not his brother whom he hath seen, how can he love God whom he hath not seen?
Contradiction with Matthew 5:44
This verse commands love towards enemies, whereas Colossians 1:8 focuses on love between believers.
Matthew 5:44: But I say unto you, Love your enemies, bless them that curse you, do good to them that hate you, and pray for them which despitefully use you, and persecute you;
Contradiction with Romans 12:9
Advises to let love be genuine, which could seem more action-oriented compared to the spiritual emphasis in Colossians 1:8.
Romans 12:9: [Let] love be without dissimulation. Abhor that which is evil; cleave to that which is good.
Contradiction with 1 Corinthians 13:1-3
Stresses actions as a demonstration of love, contrasting with the more spiritual love mentioned in Colossians 1:8.
1 Corinthians 13:1-3: Though I speak with the tongues of men and of angels, and have not charity, I am become [as] sounding brass, or a tinkling cymbal.