וְהִגַּדְתֶּ֣ם לְאָבִ֗י אֶת־כָּל־כְּבוֹדִי֙ בְּמִצְרַ֔יִם וְאֵ֖ת כָּל־אֲשֶׁ֣ר רְאִיתֶ֑ם וּמִֽהַרְתֶּ֛ם וְהוֹרַדְתֶּ֥ם אֶת־אָבִ֖י הֵֽנָּה׃
你們要把我在埃及所享有的一切尊榮，以及你們所看見的一切，都告訴我父親；你們要趕快把我父親帶下到這裡來。»
Rashbam
והגדתם את כל כבודי במצרים ואת כל אשר ראיתם. The reason why he included mention of the honour he enjoyed in Egypt was to convince his father that he had no cause to worry if he moved to Egypt as a new immigrant, an alien; his son Joseph had the power to ensure that he would be treated with the respect and deference due him.
Sforno
ומהרתם והורדתם את אבי הנה, in order to afford him the joy to see all this with his own eyes.
Chizkuni
את כל כבודי, “all the honour I enjoy;” he assured Yaakov that he had the wish and the power to make life comfortable for him in Egypt.