And kings shall be thy nursing fathers, and their queens thy nursing mothers: they shall bow down to thee with their face toward the earth, and lick up the dust of thy feet; and thou shalt know that I am the LORD: for they shall not be ashamed that wait for me.
And kings ... shall ... lick up the dust of thy feet - i:e., kiss thy feet in token of humbled submission.
For they shall not be ashamed that wait for me. The restoration of Israel shall be in answer to their prayerful waiting on the Lord (Isaiah 30:18-19; Psalms 102:16-17; Zechariah 12:10; Zechariah 14:3).