1 John 2:10

The one loving his brother with divine love abides in the light, and there is no stumbling in him.

2 Peter 1:10

Therefore, brethren, be the more diligent to make your calling and election sure: for doing these things you can never fall.

1 John 3:14

We know that we have passed out of the death into the life, because we love the brethren with divine love; the one loving not with divine love, abides in the death.

Matthew 13:21

but it has no root in him, but is temporary; and tribulation or persecution arising on account of the word, immediately he is offended.

Matthew 18:7

Woe unto the world on account of offensives, for it is necessary that offensives come; but woe unto that man through whom the offense comes!

Luke 17:1-2

And He spoke to His disciples, It is impossible for offenses not to come: but woe unto him, through whom they come;

John 8:31

Then Jesus said to the Jews, who believed on Him, If you may abide in my word, you are truly my disciples;

Romans 9:32-33

Why? Because they sought it not from faith, but as it were from works: they stumbled over the stone of stumbling,

Romans 14:13

Then let us no longer judge one another: but rather judge this, not to place before a brother an offence for a stumblingblock.

Philippians 1:10

in order that you may distinguish those things which differ; that you may be pure and without offence in the day of Christ;

Treasury of Scripture Knowledge

Summary

He that loveth his brother abideth in the light, and there is none occasion of stumbling in him.

Bible References

That loveth

1 John 3:14
We know that we have passed out of the death into the life, because we love the brethren with divine love; the one loving not with divine love, abides in the death.
John 8:31
Then Jesus said to the Jews, who believed on Him, If you may abide in my word, you are truly my disciples;
Romans 14:13
Then let us no longer judge one another: but rather judge this, not to place before a brother an offence for a stumblingblock.
2 Peter 1:10
Therefore, brethren, be the more diligent to make your calling and election sure: for doing these things you can never fall.

Occasion of stumbling

Matthew 13:21
but it has no root in him, but is temporary; and tribulation or persecution arising on account of the word, immediately he is offended.
Matthew 18:7
Woe unto the world on account of offensives, for it is necessary that offensives come; but woe unto that man through whom the offense comes!
Luke 17:1
And He spoke to His disciples, It is impossible for offenses not to come: but woe unto him, through whom they come;
Romans 9:32
Why? Because they sought it not from faith, but as it were from works: they stumbled over the stone of stumbling,
Philippians 1:10
in order that you may distinguish those things which differ; that you may be pure and without offence in the day of Christ;

General references

John 11:10
if any one may walk in the night, he stumbles, because the light is not in him.
John 13:35
in this shall all know that you are my disciples, if you may have divine love one with another.
John 15:12
This is my commandment, that you may love one another, as I loved you.
Hebrews 13:1
Let brotherly love continue.