Matthew 18:6

But whoever shall cause one of these little ones that believe in me to fall away, it were better for him to have a great millstone hung round his neck, and be swallowed up in the depth of the sea.

Mark 9:42

And whoever shall cause one of these little ones that believe to fall away, it would be better for him to have a great millstone hung round his neck, and be cast into the sea.

Matthew 18:10

Take heed that ye despise not one of these little ones; for I say to you, that their angels in heaven continually behold the face of my Father who is in heaven.

Matthew 18:14

Thus it is not the will of your Father who is in heaven that one of these little ones should perish.

Luke 17:1-2

And he said to his disciples, It is impossible but that stumblingblocks will come; but woe to him through whom they come!

Acts 9:5

And he said, Who art thou, Lord? And he answered, I am Jesus whom thou persecutest.

Romans 14:13-15

Let us then no longer judge one another; but let this rather be your judgment, not to put a stumblingblock, or an occasion to fall, in a brothers way.

Romans 14:21

It is good neither to eat flesh, nor to drink wine, nor to do anything whereby thy brother stumbleth, or is put in danger of falling, or is made weak.

Romans 15:1-3

We then who are strong ought to hear the infirmities of the weak, and not to please ourselves.

1 Corinthians 8:9-13

But take heed, lest this liberty of yours become a stumblingblock to the weak.

1 Corinthians 10:32-33

Give no occasion of stumbling either to Jews or Greeks, or to the church of God;

2 Thessalonians 1:6-9

since it will be just with God to repay distress to them that distress 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
Take heed that ye despise not one of these little ones; for I say to you, that their angels in heaven continually behold the face of my Father who is in heaven.
Luke 17:2
It were better for him to have a millstone hung round his neck, and be cast into the sea, than to cause one of these little ones to fall away.

General references

2 Corinthians 6:3
giving no occasion for stumbling in anything, that the ministry may not be blamed;
Philippians 2:4
looking each of you not to his own interest, but each to the interest of others also.