The Bible doesn’t offer any specific guidelines stipulating the age differences appropriate for marriage, but some things are implied. It is hard to imagine the lovers in the Song of Solomon being of widely disparate ages; and Proverbs 5:18, “Let your fountain be blessed, and rejoice with the wife of your youth” seems to imply the marriage of a young man to a young woman. Yet the marriage of an older person to a much younger one is not forbidden by Scripture; and since Scripture doesn’t forbid it, such marriages would be within the realm of Christian liberty.