And a stranger will they not follow, but will flee from him: for they know not the voice of strangers.
Ver. 5. A stranger will they not follow] For they have senses exercised to discern good and evil, Hebrews 5:14; "yea, they have a spirit of discerning," 1 Corinthians 12:10; "the mind of Christ," 1 Corinthians 2:16; and though simple to evil, yet are wise in that which is good. They are sheep, but rational; their service a reasonable service, Romans 12:1; their obedience the obedience of faith, Romans 16:26; they try before they trust, they look before they leap, and so grow to such a certainty in that truth they hold, such a plerophory of knowledge, Colossians 2:3; that it is impossible for them to be fully or finally deceived, Matthew 24:24. False and heterodox doctrines they hate, Psalms 119:104; and all such impostors as seek to buzz doubts into their heads, Romans 16:17 .