Matthew 19:8

He said to them, Because of your hard-heartedness Moses allowed you to put away your wives; but from the beginning it was not so.

Genesis 2:24

Therefore shall a man leave his father and his mother, and shall cleave to his wife and they shall be one flesh.

Genesis 7:7

And Noah went in. And his sons and his wife and his sons' wives went in with him into the ark, because of the waters of the flood.

Psalm 95:8

harden not your heart, as in the day of strife, as in the day of testing in the wilderness;

Jeremiah 6:16

So says Jehovah, Stand in the ways and see, and ask for the old paths where the good way is, and walk in it, and you shall find rest for your souls. But they said, We will not walk in it.

Zechariah 7:12

And they made their hearts adamant from hearing the Law and the Words which Jehovah of Hosts has sent through His Spirit, by the former prophets. And great wrath came from Jehovah of Hosts.

Malachi 2:13-14

And this is a second thing you have done, covering the altar of Jehovah with tears, weeping, and groaning, yet not facing toward the food offering, and taking it with delight from your hand.

Matthew 3:15

And answering Jesus said to him, Allow it now, for it is becoming to us to fulfill all righteousness. Then he allowed Him.

Matthew 8:31

And the demons begged Him, saying, If You cast us out, allow us to go away into the herd of swine.

Mark 10:5

And Jesus answered and said to them, He wrote you this precept because of the hardness of your hearts.

1 Corinthians 7:6

But I speak this according to permission, not according to commandment.

Treasury of Scripture Knowledge

Summary

He saith unto them, Moses because of the hardness of your hearts suffered you to put away your wives: but from the beginning it was not so.

Bible References

Because

Psalm 95:8
harden not your heart, as in the day of strife, as in the day of testing in the wilderness;
Zechariah 7:12
And they made their hearts adamant from hearing the Law and the Words which Jehovah of Hosts has sent through His Spirit, by the former prophets. And great wrath came from Jehovah of Hosts.
Malachi 2:13
And this is a second thing you have done, covering the altar of Jehovah with tears, weeping, and groaning, yet not facing toward the food offering, and taking it with delight from your hand.
Mark 10:5
And Jesus answered and said to them, He wrote you this precept because of the hardness of your hearts.

Suffered

Matthew 3:15
And answering Jesus said to him, Allow it now, for it is becoming to us to fulfill all righteousness. Then he allowed Him.
Matthew 8:31
And the demons begged Him, saying, If You cast us out, allow us to go away into the herd of swine.
1 Corinthians 7:6
But I speak this according to permission, not according to commandment.