(Without commenting on religion in the modern day,) this was a very common theme throughout early Christianity. Much of Jesus’ ministry involved condemning the religious leaders of the time for focusing on minutiae of the law, particularly Sabbath law.

Matthew 23:1–7 — “Then Jesus spoke to the crowds and to His disciples: ‘The scribes and Pharisees sit in Moses’ seat. So practice and observe everything they tell you. But do not do what they do, for they do not practice what they preach. They tie up heavy, burdensome loads and lay them on men’s shoulders, but they themselves are not willing to lift a finger to move them.’”

Matthew 23:23–24 — “Woe to you, scribes and Pharisees, you hypocrites! You pay tithes of mint, dill, and cumin. But you have disregarded the weightier matters of the law: justice, mercy, and faithfulness. You should have practiced the latter, without neglecting the former. You blind guides! You strain out a gnat but swallow a camel.” [Referring to a practice of the time: pious Jews would strain their drinks to avoid accidentally swallowing bugs, which are unclean. In focusing on such small things, and serving as the “ideal” example for others to follow, Jesus accuses them of violating the law in a much more significant way, figuratively swallowing a much bigger unclean animal.]

Luke 14:1–6 — “One Sabbath, when Jesus went to eat in the house of a prominent Pharisee, he was being carefully watched. There in front of him was a man suffering from abnormal swelling of his body. Jesus asked the Pharisees and experts in the law, ‘Is it lawful to heal on the Sabbath or not?’ But they remained silent. So taking hold of the man, he healed him and sent him on his way.

“Then he asked them, ‘If one of you has a child or an ox that falls into a well on the Sabbath day, will you not immediately pull it out?’ And they had nothing to say.”

Mark 2:23–28 — “One Sabbath Jesus was passing through the grainfields, and His disciples began to pick the heads of grain as they walked along. So the Pharisees said to Him, ‘Look, why are they doing what is unlawful on the Sabbath?’

“Jesus replied, ‘Have you never read what David did when he and his companions were hungry and in need? During the high priesthood of Abiathar, he entered the house of God and ate the consecrated bread, which was lawful only for the priests. And he gave some to his companions as well.’

“Then Jesus declared, ‘The Sabbath was made for man, not man for the Sabbath. Therefore, the Son of Man is Lord even of the Sabbath.’”

Mark 3:1–6 — “Another time Jesus went into the synagogue, and a man with a shriveled hand was there. Some of them were looking for a reason to accuse Jesus, so they watched him closely to see if he would heal him on the Sabbath. Jesus said to the man with the shriveled hand, ‘Stand up in front of everyone.’

“Then Jesus asked them, ‘Which is lawful on the Sabbath: to do good or to do evil, to save life or to kill?’ But they remained silent.

“He looked around at them in anger and, deeply distressed at their stubborn hearts, said to the man, ‘Stretch out your hand.’ He stretched it out, and his hand was completely restored. Then the Pharisees went out and began to plot with the Herodians how they might kill Jesus.”