מִ֭שָּׁמַיִם הִשְׁמַ֣עְתָּ דִּ֑ין אֶ֖רֶץ יָֽרְאָ֣ה וְשָׁקָֽטָה׃
פֿון הימל האָסטו געלאָזט הערן אַ דין, די ערד האָט מורא געקריגן און איז שטיל געװאָרן,
Or HaChaim
We must understand the matter as follows. First Malki Tzedek bestowed a blessing on Abraham which pertained to his personal wellbeing such as that his enemies should not be able to harm him, etc. Next he blessed him wishing him spiritual development a blessing directed to G'd who should allow Abraham to be His true servant. By being successful as a servant of the Lord, G'd Himself would be perceived by man as the owner of not only the heavens but also of the earth. He wished him that through him his descendants would acquire eternal life so that heaven and earth would endure forever. Our sages (compare Zohar 1,89) have expressed all this when they said that but for Abraham, G'd would not really have a true possession in either heaven or earth.