Like the preceding parable (cf. 16:60-63) this one also ends with a promise of hope.
17:22-23 The Lord Himself would also snip a tender twig from the top of the tall cedar tree that represented the Davidic line of kings. He would plant this twig on a high mountain in Israel so that it would grow there, produce sheltering boughs, and bear fruit. Birds of every kind would come and take refuge in its shady branches. People would dwell securely under the protection of this great kingdom (cf. Hos. 14:5-7; Dan. 4:12, 21; Matt. 13:32; Mark 4:32).
"Israel will protect surrounding nations rather than being their pawn. . . .
"Ezekiel compared God's future actions to those of the two eagles (Babylon and Egypt) already mentioned. Neither of those eagles had been able to provide the security and prosperity Israel desperately longed for, but God would succeed where they had failed."253
The tender twig seems clearly to be a messianic reference (cf. Isa. 11:1; Jer. 23:5-6; 33:14-16; Zech. 3:8; 6:12-13). The high mountain is probably Mount Zion, the place where Messiah will set up His throne in the Millennium (cf. Ps. 2:6). Then the cedar tree (messianic kingdom) will be very stately and fruitful.
17:24 Then the other nations (trees) would know that the one who had done this was Israel's God. He would cut down the high tree (Babylon?) and exalt the low tree (Israel). He would dry up the presently green tree (Egypt?) and make the presently dry tree (Israel) flourish. The one who promised this was Yahweh, and He would also perform it.
"Although some have understood it to have been fulfilled in the restoration of Judah under Zerubbabel, Ezra, and Nehemiah, the language goes beyond such limited scope (cf. Ezra 9:8-9) to a time yet future when Israel will have its perfect King, the Messiah, reigning on the earth in righteousness."254
"These concluding verses without question introduce a Messianic prophecy (cf. Isa. 2:2-4; Micah 4:1-4)."255