Matthew 18:6

But, if any one puts a snare in the way of one of these lowly ones who believe in me, it would be best for him to be sunk in the depths of the sea with a great millstone hung round his neck.

Mark 9:42

And, if any one puts a snare in the way of one of these lowly ones who believe in me, it would be far better for him if he had been thrown into the sea with a great millstone round his neck.

Matthew 18:10

Beware of despising one of these lowly ones, for in Heaven, I tell you, their angels always see the face of my Father who is in Heaven.

Matthew 18:14

So, too, it is the will of my Father who is in Heaven that not one of these lowly ones should be lost.

Luke 17:1-2

Jesus said to his disciples: "It is inevitable that there should be snares; yet alas for him who is answerable for them!

Acts 9:5

"Who are you, Lord?" he asked. "I am Jesus, whom you are persecuting," the voice answered;

Romans 14:13-15

Let us, then, cease to judge one another. Rather let this be your resolve--never to place a stumbling-block or an obstacle in a Brother's way.

Romans 14:21

The right course is to abstain from meat or wine or, indeed, anything that is a stumbling-block to your Brother.

Romans 15:1-3

We, the strong, ought to take on our own shoulders the weaknesses of those who are not strong, and not merely to please ourselves.

1 Corinthians 8:9-13

But take care that this right of yours does not become in any way a stumbling-block to the weak.

1 Corinthians 10:32-33

Do not cause offence either to Jews or Greeks or to the Church of God;

2 Thessalonians 1:6-9

Since God deems it just to inflict suffering upon those who are now inflicting suffering upon you,

Treasury of Scripture Knowledge

Summary

But whoso shall offend one of these little ones which believe in me, it were better for him that a millstone were hanged about his neck, and that he were drowned in the depth of the sea.

General references

Bible References

Little

Matthew 18:10
Beware of despising one of these lowly ones, for in Heaven, I tell you, their angels always see the face of my Father who is in Heaven.
Luke 17:2
It would be good for him if he had been flung into the sea with a mill-stone round his neck, rather than that he should prove a snare to even one of these lowly ones.

General references

2 Corinthians 6:3
Never do we put an obstacle in any one's way, that no fault may be found with our ministry.
Philippians 2:4
And one and all should consider, not only their own interests, but also the interests of others.