1 Peter 4:17

For the time has [now] come for the house of God [the church, See I Tim. 3:15] to begin receiving judgment [i.e., by undergoing persecution], and if it starts with us [Christians], what will be the [ultimate] end of people who do not obey the Gospel of God?

2 Thessalonians 1:8

He will inflict punishment on those people who do not know God [as Savior], and on those who do not obey the Gospel message of our Lord Jesus.

Luke 23:31

For if people are doing these things [to me] while the [leaves of the] tree are green [i.e., to someone innocent of wrongdoing], what will they do when [the leaves] are dried up [i.e., to the sinful Jews of Jerusalem]?"

Matthew 3:9-10

and quit thinking to yourselves, we claim Abraham as our forefather, because I tell you, God is able to make Abraham's children out of these stones.

Matthew 11:20-24

Then Jesus began to rebuke the people of the towns where most of His powerful miracles were performed because they did not repent [when they saw Him perform them].

Luke 10:12-14

I tell you, the people of Sodom will be shown more leniency on that day [i.e., the day of judgment] than that town will receive.

Luke 12:47-48

And that slave who knew what his master wanted, but did not make preparations [i.e., for his master's return], or do what his master wanted, will be whipped with many lashes.

Romans 2:9

anguish and distress. He will bring these upon every human being who does wrong, upon the Jews first, then also upon the Greeks [i.e., Gentiles].

Galatians 3:1

You foolish people [of the churches] of Galatia [Note: This was a province in present-day Turkey], who tricked you? Was not Jesus Christ graphically portrayed before you as being put to death on a cross?

Galatians 5:7

You [Christians] were running [the race of life] well; who hindered you [from making further progress] so that [now] you are no longer obeying the truth?

Hebrews 2:2

For if the message spoken through angels proved to be binding [Note: This is a reference to the law of Moses. See Acts 7:53; Gal. 3:19], and every violation [of it] and disobedience [to it] received a just penalty,

Hebrews 2:4

God also testified, along with those people, by [giving them] both signs and wonders and various miracles, and by [supernatural] gifts distributed [to them] by the Holy Spirit, as He desired.

Hebrews 5:9

and after becoming perfectly [qualified], He became the source of never ending salvation to all those who obey Him.

Hebrews 11:8

By [having] faith, when Abraham was called [by God] to leave [his homeland] and go to a place he would later receive as an inheritance [i.e., Palestine], he obeyed God and went out, not knowing where he was going.

Hebrews 12:24-25

and to Jesus, the Mediator of a New Agreement [between God and mankind], and to the sprinkled blood [of Jesus], which says better things [to us] than [the blood of] Abel did. [Note: The contrast seems to be that "Abel's blood called for vengeance and death (See Gen. 4:10) whereas the blood of Christ provides mercy and life"].

1 Peter 2:8

[And it also says, Isa. 8:14, that He would be], "A stone that people would stumble over and a rock over which they would trip and fall." The way they stumble is by disobeying the Gospel message. They were destined [though not forced] to do this.

Treasury of Scripture Knowledge

Summary

For the time is come that judgment must begin at the house of God: and if it first begin at us, what shall the end be of them that obey not the gospel of God?

And if

General references

Bible References

Judgment

Matthew 3:9
and quit thinking to yourselves, we claim Abraham as our forefather, because I tell you, God is able to make Abraham's children out of these stones.
Luke 12:47
And that slave who knew what his master wanted, but did not make preparations [i.e., for his master's return], or do what his master wanted, will be whipped with many lashes.

And if

Luke 23:31
For if people are doing these things [to me] while the [leaves of the] tree are green [i.e., to someone innocent of wrongdoing], what will they do when [the leaves] are dried up [i.e., to the sinful Jews of Jerusalem]?"

What

Matthew 11:20
Then Jesus began to rebuke the people of the towns where most of His powerful miracles were performed because they did not repent [when they saw Him perform them].
Luke 10:12
I tell you, the people of Sodom will be shown more leniency on that day [i.e., the day of judgment] than that town will receive.
Hebrews 2:2
For if the message spoken through angels proved to be binding [Note: This is a reference to the law of Moses. See Acts 7:53; Gal. 3:19], and every violation [of it] and disobedience [to it] received a just penalty,
Hebrews 12:24
and to Jesus, the Mediator of a New Agreement [between God and mankind], and to the sprinkled blood [of Jesus], which says better things [to us] than [the blood of] Abel did. [Note: The contrast seems to be that "Abel's blood called for vengeance and death (See Gen. 4:10) whereas the blood of Christ provides mercy and life"].

General references

Matthew 24:8
But all these things are [only] the beginning of terrible times.
Luke 23:31
For if people are doing these things [to me] while the [leaves of the] tree are green [i.e., to someone innocent of wrongdoing], what will they do when [the leaves] are dried up [i.e., to the sinful Jews of Jerusalem]?"