Contradiction with Matthew 10:34
This verse speaks of bringing not peace, but a sword, which contradicts the welcoming and acceptance notion of Matthew 18:5.
Matthew 10:34: Think not that I am come to send peace on earth: I came not to send peace, but a sword.
Contradiction with Luke 14:26
This verse emphasizes hating one's own family to be a disciple, which contrasts with the accepting and loving message in Matthew 18:5.
Luke 14:26: If any [man] come to me, and hate not his father, and mother, and wife, and children, and brethren, and sisters, yea, and his own life also, he cannot be my disciple.
Contradiction with Matthew 7:6
This verse advises not giving what is holy to dogs, implying discernment and exclusion, differing from the inclusive welcome to children in Matthew 18:5.
Matthew 7:6: Give not that which is holy unto the dogs, neither cast ye your pearls before swine, lest they trample them under their feet, and turn again and rend you.
Paradox #1
The potential contradiction in Matthew 18:5 could arise if the verse is interpreted as showing special importance to children without equally emphasizing compassion and care for all vulnerable groups. This might lead someone to question why the same level of emphasis isn't explicitly placed on other groups that also need care and protection. However, one could argue that the broader message of love and kindness extends to everyone.