how to say “have some…” in Hebrew
לְהִתְכַּבֵּד
Providing guests with tasty refreshments is a way of honoring them. Thus the Hebrew expression for refreshments is כִּבּוּד 
listen and repeat – literally, honoring.
listen and repeat – literally, honoring.For example:
שַׂמְתֶּם אֶת הַכִּבּוּד עַל הַשֻּׁלְחָן?
Have you (plural) put the refreshments on the table?
When the guests arrive, you might invite them to partake in the refreshments by saying to them, תִּתְכַּבְּדוּ listen and repeat – literally, honor yourselves, where תתכבדו is a conjugated form of the reflexive-intensive verb לְהִתְכַּבֵּד listen and repeat.
listen and repeat – literally, honor yourselves, where תתכבדו is a conjugated form of the reflexive-intensive verb לְהִתְכַּבֵּד listen and repeat.להתכבד can also mean to be honored, as in:
אֲנִי מִתְכַּבֵּד לְהַזְמִין אֶת נְשִׂיא הָאוּנִיבֶרְסִיטָה לָשֵׂאת כַּמָּה דִּבְרֵי פְּתִיחָה.
I (a male) am honored to invite the president of the university to make a few opening remarks.