Proverbs 2:17

who abandons the companion of her youth
and forgets the covenant of her God;

Jeremiah 3:4

Have you not lately called to Me, “My Father.
You were my friend in my youth.

Proverbs 5:18

Let your fountain be blessed,
and take pleasure in the wife of your youth.

Ezekiel 16:8

“Then I passed by you and saw you, and you were indeed at the age for love. So I spread the edge of My garment over you and covered your nakedness. I pledged Myself to you, entered into a covenant with you, and you became Mine.” This is the declaration of the Lord God.

Ezekiel 16:59-60

“For this is what the Lord God says: I will deal with you according to what you have done, since you have despised the oath by breaking the covenant.

Malachi 2:14-16

Yet you ask, “For what reason?” Because the Lord has been a witness between you and the wife of your youth. You have acted treacherously against her, though she was your marriage partner and your wife by covenant.

Treasury of Scripture Knowledge

Summary

Which forsaketh the guide of her youth, and forgetteth the covenant of her God.

Bible References

The guide

Proverbs 5:18
Let your fountain be blessed,
and take pleasure in the wife of your youth.
Jeremiah 3:4
Have you not lately called to Me, “My Father.
You were my friend in my youth.

Forgetteth

Ezekiel 16:8
“Then I passed by you and saw you, and you were indeed at the age for love. So I spread the edge of My garment over you and covered your nakedness. I pledged Myself to you, entered into a covenant with you, and you became Mine.” This is the declaration of the Lord God.
Malachi 2:14
Yet you ask, “For what reason?” Because the Lord has been a witness between you and the wife of your youth. You have acted treacherously against her, though she was your marriage partner and your wife by covenant.

General references

Exodus 20:14
Do not commit adultery.
Leviticus 15:20
Anything she lies on during her menstruation will become unclean, and anything she sits on will become unclean.
Numbers 5:12
“Speak to the Israelites and tell them: If any man’s wife goes astray, is unfaithful to him,

Holman Christian Standard Bible®, Copyright © 1999, 2000, 2002, 2003, 2009 by Holman Bible Publishers.