Contradiction with Matthew 5:44
While Isaiah 41:3 speaks to overcoming enemies, Matthew 5:44 commands love for enemies, presenting a contrast in approach.
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 12:19
Isaiah 41:3 implies personal action against foes, whereas Romans 12:19 teaches leaving vengeance to God, contradicting by removing personal intervention.
Romans 12:19: Dearly beloved, avenge not yourselves, but [rather] give place unto wrath: for it is written, Vengeance [is] mine; I will repay, saith the Lord.
Contradiction with Luke 6:27
In contrast to the notion of pursuing enemies in Isaiah 41:3, Luke 6:27 directs actions of goodness towards them, offering a pacifistic viewpoint.
Luke 6:27: But I say unto you which hear, Love your enemies, do good to them which hate you,
Contradiction with Proverbs 25:21-22
This passage suggests providing for enemies, which contradicts the idea of pursuing them until their defeat as seen in Isaiah 41:3.
Proverbs 25:21-22: If thine enemy be hungry, give him bread to eat; and if he be thirsty, give him water to drink:
Contradiction with Exodus 23:4-5
Suggests returning lost property to enemies, opposing the aggressive stance in Isaiah 41:3 towards adversaries.
Exodus 23:4-5: If thou meet thine enemy's ox or his ass going astray, thou shalt surely bring it back to him again.
Contradiction with Colossians 3:13
Encourages forgiveness towards grievances, which contradicts the pursuit of enemies implied in Isaiah 41:3.
Colossians 3:13: Forbearing one another, and forgiving one another, if any man have a quarrel against any: even as Christ forgave you, so also [do] ye. [quarrel: or, complaint]