Commentaries:
Robertson's Word Pictures (NT)
Spent their time (hukairoun). Imperfect active of eukairew. A late word to have opportunity (eu, kairov) from Polybius on. In the N.T. only here and Mark 6:31. They had time for,.etc. This verse is an explanatory parenthesis by Luke.
Some new thing (ti kainoteron). Literally "something newer" or "fresher" than the new, the very latest, the comparative of kainov. Demosthenes (Philipp. 1. 43) pictures the Athenians "in the agora inquiring if anything newer is said" (punqanomenoi kata thn agoran ei ti legetai newteron). The new soon became stale with these itching and frivolous Athenians.
Other Robertson's Word Pictures (NT) entries containing Acts 17:21:
Acts 14:15
Acts 17:18
Acts 17:22
2 Timothy 4:3
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