It is better for you to enter life crippled than to have two feet and be thrown into hell. And if your eye causes you to sin, pluck it out. It is better for you to enter the kingdom of God with one eye than to have two eyes and be thrown into hell, where "their worm does not die, and the fire is not quenched." Everyone will be salted with fire. (Mark 9: 46-49)

I don't know about heaven and I don't know about hell, but I do know about sin.

The Greek translated above as sin is skandalizo, our English scandal is easy to recognize.

This is to stumble or to become entangled. The noun form can mean trap or snare.

We are on our way when we are distracted for a moment and fall into the mud... or off a cliff.

Jesus quotes from Isaiah 66 where the most specific condemnation is promised to the most proudly religious:

But whoever sacrifices a bull
is like one who kills a man,
and whoever offers a lamb,
like one who breaks a dog's neck;
whoever makes a grain offering
is like one who presents pig's blood,
and whoever burns memorial incense,
like one who worships an idol.
They have chosen their own ways,
and their souls delight in their abominations;
so I also will choose harsh treatment for them
and will bring upon them what they dread.

This is, perhaps, why "lead us not into temptation" is so prominent in the prayer that Jesus taught. Even our religious practices can become as traps.

Above is Dante Addresses Pope Nicholas III by Paul August Dore. In the Divine Comedy Dante encounters the 13th Century Pope in the Eighth Circle of Hell.