From ginosko; cognition, i.e. (subjectively) opinion, or (objectively) resolve (counsel, consent, etc.) -- advice, + agree, judgment, mind, purpose, will.
see GREEK ginosko
1. the faculty of knowing, mind, reason.
2. that which is thought or known, one's mind;
a. view, judgment, opinion: 1 Corinthians 1:10; Revelation 17:13.
b. mind concerning what ought to be done, aa. by oneself, resolve, purpose, intention: ἐγένετο γνώμη (T Tr WH γνώμης, see γίνομαι 5 e. a.) τοῦ ὑποστρέφειν, Acts 20:3 (Buttmann, 268 (230)). bb. by others, judgment, advice: διδόναι γνώμην, 1 Corinthians 7:25 (40); 2 Corinthians 8:10. cc. decree: Revelation 17:17; χωρίς τῆς σής γνώμης, without thy consent, Philemon 1:14. (In the same senses in Greek writings; (cf. Schmidt, chapter 13, 9; Meyer on 1 Corinthians 1:10).)