Religion:
"The Pharisees and Sadducees came to Jesus and tested him by asking him to show them a sign from heaven." (Matthew 16:1 NIV)
Christianity:
"He replied, 'When evening comes, you say, ‘It will be fair weather, for the sky is red,’ and in the morning, ‘Today it will be stormy, for the sky is red and overcast.’ You know how to interpret the appearance of the sky, but you cannot interpret the signs of the times.A wicked and adulterous generation looks for a sign, but none will be given it except the sign of Jonah.” Jesus then left them and went away." (Matthew 16:2-4 NIV)
Matthew records yet another confrontation between religion and Christianity. In this encounter, Jesus contrasts the religious leaders' meteorological awareness with their theological dullness.
None of these passages you quote are a "confrontation" between "religion" and "Christianity". They could be considered a "confrontation" between Christ and the religious leaders of his time.