Presumably, he married one of his sisters (since Adam had many
children—Genesis 5:1).The command to
abstain from incest was not given until later (Leviticus 18:6), and Romans 5:13
tells us that sin is not imputed where there is no law.
If Christianity is true, and we hold that it is, we are to share our faith in Jesus Christ and all He represents, and are to always be ready to make a defense to everyone who asks. (1 Peter 3:15)
Conservative Christian leaders unveiled a declaration Friday calling on
Christians not to comply with rules and laws forcing them to accept abortion,
same-sex marriage and other ideals that go against their religious doctrines.