Romans 1:31

they do not have any sense; they do not keep their promises; they fail to show natural affection; and they are merciless.

Galatians 3:15

Brothers, I will use an illustration from the way people deal with each other: Even though an agreement is made between people, once it is finally settled, no one can cancel it or include additional provisions to it.

Treasury of Scripture Knowledge

Summary

And Abraham took sheep and oxen, and gave them unto Abimelech; and both of them made a covenant.

Bible References

Made

Romans 1:31
they do not have any sense; they do not keep their promises; they fail to show natural affection; and they are merciless.
Galatians 3:15
Brothers, I will use an illustration from the way people deal with each other: Even though an agreement is made between people, once it is finally settled, no one can cancel it or include additional provisions to it.