Good Morning Everyone!
1st Kings chapter 11.
God said not to marry “foreign” women.  That doesn't mean as Christians we aren't to marry other people from another country.  When God speaks of “foreign” women, He meant women from another nation who serve false gods.  Therefore, the Israelites were not to marry people who were serving false gods because their influence would turn them away from the Lord.  That's exactly what happened to Solomon which resulted into a split Kindgom after his death.
We see this a lot amongst Christians today…STILL!!
II Corinthians 6:14 and Malachi 2:15-16 warns us from pursuing relationships where the other person is not of the faith.
When we ignore God's loving plea and directive, bad results occur just like with Solomon.  It affects the whole family, including the kids.