Matthew 18:6

but whoever offends one of these little ones that believe in me, it would be better for him that a millstone should be hung to his neck, and that he should be plunged into the depths of the sea.

Mark 9:42

And whoever shall offend one of the little ones having faith, it would be better for him if a millstone was put about his neck and he was cast into the sea.

Matthew 18:10

See that you despise not one of these little ones; for I tell you that their angels always behold the face of my Father in heaven.

Matthew 18:14

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

Luke 17:1-2

AND he said to his disciples, It is inevitable that offenses should come; but woe to him by whom they come;

Acts 9:5

And he said, Who are you, Lord? And he said, I am Jesus whom you persecute.

Romans 14:13-15

Let us not therefore judge one another, but judge this rather, not to place a stumbling-block or an offense before a brother.

Romans 14:21

it is good not to eat meat nor drink wine, nor [do] any thing by which your brother stumbles.

Romans 15:1-3

And we, the strong, ought to bear the infirmities of those who are not strong, and not to please ourselves.

1 Corinthians 8:9-13

But beware lest your liberty should become an offense to the weak.

1 Corinthians 10:32-33

Be without offense both to Jews and Greeks, and the church of God,

2 Thessalonians 1:6-9

since it is just with God to repay affliction to those who afflict 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
See that you despise not one of these little ones; for I tell you that their angels always behold the face of my Father in heaven.
Luke 17:2
it would be profitable for him if a millstone was placed around his neck, and he was cast into the sea, rather than that he should offend one of these little ones.

General references

Philippians 2:4
and let each consider not his own interests, but also those of others.