These words spake Jesus, and lifted up his eyes to heaven, and said, Father,the hour is come; glorify thy Son, that thy Son also may glorify thee:

What is Jesus teaching by example here? There are at least two things. Note His posture and the context of his prayer (what He says to the disciples before it).

ANSWER 1

After having said, In the world you shall have tribulation, our Lord turns from admonition to prayer; thus teaching us in our tribulations to abandon all other things, and flee to God. St John Chrysostom

He lifted up His eyes to heaven to teach us intentness in our prayers: that we should stand with uplifted eyes, not of the body only, but of the mind St John Chrysostom