What the Bible says

Open the Word of the Lord and find the answer to the following questions:
According to the passage in Joshua 23:12-13, what would happen if God's people married the Gentiles?
In Deuteronomy 7:3-4 God reveals the reason why His people should not marry the Gentiles. What's that reason?
Under what conditions does Paul say in 1 Corinthians 7:39 that a woman should marry?
What does Paul associate the relations between believers and unbelievers with, in 2 Corinthians 6:14-16?