'Skillful' in the Bible

I saw that all labor and all skillful work is due to a man’s jealousy of his friend. This too is futile and a pursuit of the wind.

Again I saw under the sun that the race is not to the swift, or the battle to the strong, or bread to the wise, or riches to the discerning, or favor to the skillful; rather, time and chance happen to all of them.