en_tn_condensed/mat/26/39.md

fell on his face

He purposely lay face down on the ground to pray.

My Father

This refers to God the Father. It is best to translate “Father” with the same word that your language uses to refer to a human father.

let this cup pass from me

Jesus speaks of the work that he must do, including dying on the cross, as if it were a bitter liquid that God has commanded him to drink from a cup. The word "cup" is an important word in the New Testament, so try to use an equivalent for that in your translation.

this cup

Jesus is asking the Father if it is possible for him not to have to experience the death and suffering that Jesus knows will soon happen.

Yet, not as I will, but as you will

"But do not do what I want; instead, do what you want"