John 15:22

If I had not come and spoken unto them, they had not had sin: but now they have no excuse for their sin.

John 9:41

Jesus said unto them, If ye were blind, ye would have no sin: but now ye say, We see: your sin remaineth.

Romans 1:20

For the invisible things of him since the creation of the world are clearly seen, being perceived through the things that are made, even his everlasting power and divinity; that they may be without excuse:

Ezekiel 2:5

And they, whether they will hear, or whether they will forbear, (for they are a rebellious house,) yet shall know that there hath been a prophet among them.

Ezekiel 33:31-33

And they come unto thee as the people cometh, and they sit before thee as my people, and they hear thy words, but do them not; for with their mouth they show much love, but their heart goeth after their gain.

Luke 12:46

the lord of that servant shall come in a day when he expecteth not, and in an hour when he knoweth not, and shall cut him asunder, and appoint his portion with the unfaithful.

John 3:18-21

He that believeth on him is not judged: he that believeth not hath been judged already, because he hath not believed on the name of the only begotten Son of God.

John 12:48

He that rejecteth me, and receiveth not my sayings, hath one that judgeth him: the word that I spake, the same shall judge him in the last day.

John 19:11

Jesus answered him, Thou wouldest have no power against me, except it were given thee from above: therefore he that delivered me unto thee hath greater sin.

Acts 17:30

The times of ignorance therefore God overlooked; but now he commandeth men that they should all everywhere repent:

Romans 2:1

Wherefore thou art without excuse, O man, whosoever thou art that judgest: for wherein thou judges another, thou condemnest thyself; for thou that judgest dost practise the same things.

2 Corinthians 2:14-16

But thanks be unto God, who always leadeth us in triumph in Christ, and maketh manifest through us the savor of his knowledge in every place.

Hebrews 6:4-8

For as touching those who were once enlightened and tasted of the heavenly gift, and were made partakers of the Holy Spirit,

James 4:17

To him therefore that knoweth to do good, and doeth it not, to him it is sin.

1 Peter 2:16

as free, and not using your freedom for a cloak of wickedness, but as bondservants of God.

Treasury of Scripture Knowledge

Summary

If I had not come and spoken unto them, they had not had sin: but now they have no cloke for their sin.

General references

Bible References

Cloke

Romans 1:20
For the invisible things of him since the creation of the world are clearly seen, being perceived through the things that are made, even his everlasting power and divinity; that they may be without excuse:
Romans 2:1
Wherefore thou art without excuse, O man, whosoever thou art that judgest: for wherein thou judges another, thou condemnest thyself; for thou that judgest dost practise the same things.
1 Peter 2:16
as free, and not using your freedom for a cloak of wickedness, but as bondservants of God.

General references

Luke 10:14
But it shall be more tolerable for Tyre and Sidon in the judgment, than for you.
John 16:9
of sin, because they believe not on me;
James 4:17
To him therefore that knoweth to do good, and doeth it not, to him it is sin.

American Standard Version Public Domain