purposed in his heart = made up his mind. Compare Pro_23:7.
defile himself, &c. This was because meat was killed with the blood (contrary to Lev_3:17; Lev_7:26; Lev_17:10-14; Lev_19:26), and offered to idols (Exo_34:15. 1Co_10:20. Compare Act_15:29). Not because they were acting on vegetarian and temperance principles.