Matthew 19:8

He saith unto them - Moses, in view of your hardness of heart, permitted you to divorce your wives; From the beginning however, hath it not been done, thus.

Genesis 2:24

For this cause, will a man leave his father and his mother, and cleave unto his wife, and they shall become one flesh.

Genesis 7:7

So Noah entered, and his sons and his wife and his sons wives with him into the ark, - from before the waters of the flood,

Psalm 95:8

Do not harden your heart as at Meribah, As on the day of Massah, in the desert;

Jeremiah 6:16

Thus saith Yahweh - Stand ye at the ways - and see, And ask for the paths of age-past times, Where is the good way? And walk therein, And ye shall find rest to your souls. But they said, We will not walk therein !

Zechariah 7:12

and, their heart, turned they into adamant, that they might not hear the law, nor the words which Yahweh of hosts sent by his spirit, through the former prophets, - and so there came great wrath from Yahweh of hosts.

Malachi 2:13-14

And, this, a second time, will ye do, covering with tears, the altar of Yahweh, weeping and making outcry, - because he will not again turn unto the gift, and receive it with acceptance, at your hands?

Matthew 3:15

But Jesus answering, said unto him, Suffer me even now, - for, thus, it becometh us, to fulfil, all righteousness; then, he suffered him.

Matthew 8:31

and, the demons, began to beseech him, saying, If thou dost cast us out, send us away, into the herd of swine.

Mark 10:5

But, Jesus, said unto them - In view of your hardness of heart, wrote he for you this commandment;

1 Corinthians 7:6

This, however I am saying, by way of concession, not of injunction;

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
Do not harden your heart as at Meribah, As on the day of Massah, in the desert;
Zechariah 7:12
and, their heart, turned they into adamant, that they might not hear the law, nor the words which Yahweh of hosts sent by his spirit, through the former prophets, - and so there came great wrath from Yahweh of hosts.
Malachi 2:13
And, this, a second time, will ye do, covering with tears, the altar of Yahweh, weeping and making outcry, - because he will not again turn unto the gift, and receive it with acceptance, at your hands?
Mark 10:5
But, Jesus, said unto them - In view of your hardness of heart, wrote he for you this commandment;

Suffered

Matthew 3:15
But Jesus answering, said unto him, Suffer me even now, - for, thus, it becometh us, to fulfil, all righteousness; then, he suffered him.
Matthew 8:31
and, the demons, began to beseech him, saying, If thou dost cast us out, send us away, into the herd of swine.
1 Corinthians 7:6
This, however I am saying, by way of concession, not of injunction;