Romans 11:21

lest God should not spare you, since he did not spare even the natural branches.

Romans 8:32

he that spared not his own son, but delivered him up for us all, will he not with him likewise freely give us all things?

Romans 11:17

if then, some of the branches are broken off, and thou like a wild olive, were grafted in their place to partake of the root and sap of the olivestock;

Romans 11:19

you will say then, "the branches were broken off, that I might be grafted in."

1 Corinthians 10:1-12

I would not have you ignorant, my brethren, that all our fathers were under the Cloud, all passed thro' the sea:

2 Peter 2:4-9

for since God did not spare the angels, who had sinned, but having precipitated them to hell, confin'd them to chains of darkness, where they are reserv'd for judgment:

Jude 1:5

Now, I would call to your remembrance what you once were inform'd of, that when the Lord had delivered the people from the land of Egypt, he afterward destroyed those that were disobedient.

Treasury of Scripture Knowledge

Summary

For if God spared not the natural branches, take heed lest he also spare not thee.

Bible References

If god

Romans 11:17
if then, some of the branches are broken off, and thou like a wild olive, were grafted in their place to partake of the root and sap of the olivestock;
Romans 8:32
he that spared not his own son, but delivered him up for us all, will he not with him likewise freely give us all things?
1 Corinthians 10:1
I would not have you ignorant, my brethren, that all our fathers were under the Cloud, all passed thro' the sea:
2 Peter 2:4
for since God did not spare the angels, who had sinned, but having precipitated them to hell, confin'd them to chains of darkness, where they are reserv'd for judgment:
Jude 1:5
Now, I would call to your remembrance what you once were inform'd of, that when the Lord had delivered the people from the land of Egypt, he afterward destroyed those that were disobedient.