Yes easier for a camel to go thru the eye of a needle...
Any animal can go through the narrow door.
1. Archangel Michael calm the lions down when prophet Daniel was imprisoned.
2. The donkey stopped at the middle of the road when an angel appeared.
3. All animals came to the Ark when God commands them.
But mankind, depending on the heart of men if they willing.
In the Old Testament:
1. Samson disobey his parents and God
2. King Saul disobey God twice.
3. God forgave David but laid a curse on him. Prophet Nathan also told David that God made life hard.
4. During Exodus, the Israelites complained to Moses and worship the golden calf instead of their creator.
In the New Testament:
1. The Pharisees and Sadducees followed the law of Moses however refuse to follow Jesus
2. John baptized people of Jordan while Jesus healed the sick, the lame, and raise the dead. Millions heard Jesus preach. Some do understand and follow him, but some don't and won't follow him.
3. Jesus ask many followers if they willing to sacrifice their lives for Jesus's sake, half of the group back out and the remaining willing to take the stand. The ones that back out heard Jesus's missions, "for those who die for my sake, may live. For those rather save their own lives may lose their own soul." They were afraid.
In modern times, people still do the same thing.