Genesis 24:1 Now Abraham was old, well advanced in years. And the Lord had blessed Abraham in all things. And Abraham said to his servant, the oldest of his household, who had charge of all that he had, “Put your hand under my thigh, that I may make you swear by the Lord, the God of heaven and God of the earth, that you will not take a wife for my son from the daughters of the Canaanites, among whom I dwell, but will go to my country and to my kindred, and take a wife for my son Isaac.”
Nehemiah 13:25 And I confronted them and cursed them and beat some of them and pulled out their hair. And I made them take an oath in the name of God, saying, “You shall not give your daughters to their sons, or take their daughters for your sons or for yourselves.
Exodus 34:16 and you take of their daughters for your sons, and their daughters whore after their gods and make your sons whore after their gods.
Deuteronomy 7:3-4 You shall not intermarry with them, giving your daughters to their sons or taking their daughters for your sons, for they would turn away your sons from following me, to serve other gods. Then the anger of the LORD would be kindled against you, and he would destroy you quickly.
2 Corinthians 6:14-17 Do not be unequally yoked with unbelievers. For what partnership has righteousness with lawlessness? Or what fellowship has light with darkness?
Matthew Henry writes about marriage of Isaac;
Marriage is to be undertaken with much care and with reference to the will of God, and with prayer for his direction and blessing. When God is not consulted and regarded His blessing cannot be expected. It is natural for parents to be concerned about the welfare of their children’s souls and that their walk this side of eternity is on the path of God’s purpose. Note that Abraham remembers what God had wonderfully brought him out of the land of his birth, by the call of his grace; and therefore does not doubt He will prosper what he has placed in his care – His son Isaac.
It is also true that if we think we can partner or bond with things of this world and liberal culture and it not have an affect on our commitment to God is foolish. When His word is void in our daily lives there will be no guiding light to direct all of the decisions big and small. When the world culture is the major influence in your values it is impossible to discern what is honorable and in obedience to God’s plan and purposes.
Aim to humbly honor, serve, follow, glorify and obey Him surely our decisions will be inline with His word and the quiet whispers of His leading.