Allah said: {And we have certainly made the Quran easy to remember. So is there anyone who will be mindful?} [Surat Al-Qamar: 17]..
The prophet SAW said “The one who is proficient in the recitation of the Qur’an will be with the honorable and obedient scribes (angels) and he who recites the Qur’an and finds it difficult to recite, doing his best to recite it in the best way possible, will have two rewards.”
There’s no doubt that memorizing Quran is one of the great righteous deeds that person can do or encourage his children to do, there’s nothing more beautiful than being the companion of Quran the prophet already said “Read the Qur’an, as it will come as an intercessor for its companions on the Day of Resurrection.”