"heaviness" in Spanish

The inner spatial development is the product of antitheses: of concealing and revealing, heaviness and lightness, regularity and irregularity.
El desarrollo espacial interior es el producto de la antítesis: de ocultar y de mostrar, de la pesadez y de la ligereza, de la regularidad y la irregularidad.
Context examples for "heaviness" in Spanish(!) These sentences come from external sources & may not be accurate. Therefore, we are not responsible for their content.
What ailed you when you were told to march forth in Allah's way, that you were bowed down to the ground with heaviness?
¿Que os pasa que cuando se os dice: “Id a combatir por la causa de Dios,” os apegáis tenazmente a la tierra?