Asta and the other Magic Knights chosen to train in the Heart Kingdom are joined by Magna and they finally start their training under Loropechika and the Spirit Guardians of Lightning, Earth, Plants, Fire, and Wind and Undine. Since Asta has no magic to begin with, he ends up sparring with Gaja, the Spirit Guardian of Lighting.  They Magic Knights all work harder to surpass their limits.
So you're telling us to understand the earth.
.تقصدين إذًا أن نفهم الأرض
Sie möchten also,
dass wir die Erde verstehen?
¿Debemos comprender mejor la tierra?
¿Debemos comprender mejor la tierra?
Vous voulez
qu’on comprenne la terre ?
Quindi in sostanza 
ci stai chiedendo di capire la terra.
Então está nos dizendo
para compreender o solo.
Мы должны понять землю?