One of the first references to this is found in Deuteronomy 7:3, 4.
Here the children of Israel were admonished not to marry the children of Canaan because "they would turn your sons away from following me, to serve other gods." Also after the exile of Israel, Nehemiah pointed out to the remnant (the surviving children of Israel) that the great King Solomon was led astray by his relationship with women who served other gods (Nehemiah , 27).
The biblical imperative for all Christians is to date only those who are likewise committed to Christ.
Following Christ is the most important decision you'll ever make. Choosing a mate who shares your faith and who will support you in your spiritual growth.
Marriage based on a common faith is for our benefit, blessing and protection. Make the decision to follow Him and allow Him to help you find the right mate for you.
Question Do you know of any Bible verses pertaining to Christians dating non-Christians?
Recognizing this truth the Assemblies of God opposes the practice of dating or marrying unbelievers.
CONCERNS: The church also expresses concern about a practice of some Christians who date non-believers so as to try to lead them to faith in Christ.In its ideal form the goal may seem pure, but such practice is biblically flawed and presents the Christian with certain risks.At stake are the Christians personal testimony as well as his/her own physical and spiritual well-being.Although there have been instances where unbelieving spouses have been won to the Lord, many Christian spouses have either been restricted in their faith or tragically fallen away from Christ as a result.Clearly the biblical rule of 2 Corinthians forbidding yoking with non-believers suggests that dating to evangelize is not a practice for committed Christians." [2 Corinthians -16] These verses are commonly applied to marriage, but actually apply to any spiritual endeavor.