Noah Webster's Dictionary 1. (n.) Superior skill; dominion; command; supremacy; superiority. 2. (n.) Superiority in war or competition; victory; triumph; preeminence. 3. (n.) Contest for superiority. 4. (n.) A masterly operation; a feat. 5. (n.) Specifically, the philosopher's stone. 6. (n.) The act process of mastering; the state of having mastered. Int. Standard Bible Encyclopedia MASTERY mas'-ter-i, gebhurah, shelet, Aramaic; agonizomai, athleo): "Mastery" occurs twice in the Old Testament and twice in the King James Version of the New Testament: in Exodus 32:18 (gebhurah, "might"), "the voice of them that shout for mastery"; in Daniel 6:24 (shelet, "to have power"), "The lions had the mastery of them"; in 1 Corinthians 9:25, agonizomai, "to contend for a prize," to be a combatant in the public games, is translated "striveth for the mastery," the Revised Version (British and American) "striventh in the games"; and in 2 Timothy 2:5, athelo, with the same meaning, is translated "strive for masteries," the Revised Version (British and American) "contend in the games." From the Greek we have the words "athlete," etc.. W. L. Walker

Multi-Version Concordance Mastery (5 Occurrences) Romans 6:9 knowing that Christ, being raised from the dead, dies no more. Death no more has dominion over him! (See NIV) 1 Corinthians 9:25 And every man that striveth for the mastery is temperate in all things. Now they do it to obtain a corruptible crown; but we an incorruptible. (KJV WBS) Exodus 32:18 And he said, It is not the voice of them that shout for mastery, neither is it the voice of them that cry for being overcome: but the noise of them that sing do I hear. (KJV JPS ASV WBS) Esther 9:1 Now in the twelfth month, which is the month Adar, on the thirteenth day of the month, when the king's commandment and his decree drew near to be put in execution, on the day that the enemies of the Jews hoped to conquer them, (but it was turned out the opposite happened, that the Jews conquered those who hated them), (See NAS RSV) Daniel 6:24 The king commanded, and they brought those men who had accused Daniel, and they cast them into the den of lions, them, their children, and their wives; and the lions had the mastery of them, and broke all their bones in pieces, before they came to the bottom of the den. (WEB KJV JPS ASV DBY WBS)