Verse 5 world kosmos = mankind. (See Scofield "Matthew 4:8") . Verse 12 natural brute beasts natural animals without reason. Jude 1:10. Verse 14 sin Sin. (See Scofield "Romans 3:23") . Verse 15 Balaam Balaam. (See Scofield "Numbers 22:5") was the typical hireling prophet, anxious only to make a market of his gift. This is the "way" of Balaam. See the "error" of Balaam, See Scofield "Jude 1:11" and the "doctrine" of Balaam, See Scofield "Revelation 2:14". Verse 20 world kosmos = world-system. 1 John 2:15-17; John 7:7 (See Scofield "Revelation 13:8") Saviour (See Scofield "Romans 1:16")