If you are looking for a foreign language to teach your children that will also be a great way for them to learn more about scriptures, a great option would be to learn Biblical Greek. Although it may sound like a hard thing, I would love to share with you how to teach Biblical Greek at home.
How to Teach Biblical Greek at Home
Hey Andrew! Teach Me Some Greek! A Biblical Greek Worktext is a 36 lesson curriculum. I had the opportunity to review Level 3 which starts with guiding your child through a review of the Greek alphabet. If you want more time to work on the foundation of Greek, you can start with either Level 1 or Level 2 before moving into Level 3.
The Worktext is a consumable curriculum that is spiral bound that allows the student to easily work through the daily assignments, right into the book.
The Level 3 Answer Key is very important and necessary. It breaks down all the assignments, with details for the teacher to implement for each lesson that is covered on a weekly basis.
In addition to the student completing one page a day, as their assignment, they are also assigned to practice the flashcards daily. These are perfect for the short lessons for those following the Charlotte Mason way of educating their children.
Each lessons has vocabulary work that ties together with the flashcards, along with a check box for the daily practice of the flashcards. There is an optional pronunciation CD that can be used in Level Three and Level Four, which would make it easier if you struggle with foreign language and want to ensure your children are learning how to pronounce the vocabulary properly.
As they move through the curriculum, they will build on their sentence building skills, as they practice turning English into Greek and Greek into English. This will be easy for you to correct, as the answers are found in the Answer Key.
If you like to see how much your child retains in their studies of Biblical Greek, you can use the consumable quizzes and exams to evaluate their progress, as they move through the curriculum.
Hey Andrew! Teach Me Some Greek is one of the best curriculums that I have seen for children that are ready to add foreign language to their lessons. The simplicity of the lessons, the addition of flashcards and pronunciation CD and the useful lesson plans and answers provided in the Answer Key makes this a good thing to having your children dig deeper into scripture, as they learn Biblical Greek.
*I received Hey Andrew! Teach Me Some Greek Level 3 for a review and was compensated for my honest opinion for this curriculum.

Would you recommend this program for those students who are older but have never had foreign language studies? (like those in middle school or older?)
Dee, I would recommend it for middle school, for sure. I also feel it would be great for high school, but you would want to do a higher level than the one that I reviewed. It is very thorough!