John Gill Commentary Luke 14:8

"When thou art bidden of any man to a marriage feast, sit not down in the chief seat; lest haply a more honorable man than thou be bidden of him," — Luke 14:8 (ASV)

When you are bidden of any man to a wedding
To a wedding dinner, or to any other; such as the present entertainment, which was not a marriage feast, for they might not marry on the sabbath day; (See Gill on John 2:1) but a common sabbath meal:

sit not down in the highest room :
in the chief place at table, as soon as you come in:

lest a more honourable man ;
for age, office, dignity, wisdom, learning, or riches:

than you are bidden of him :
the master of the feast; and who may not yet be come, and for whom the chief place may be designed, and will better suit him.