'Skill' in the Bible

When there is a man whose work was done with wisdom, knowledge, and skill, and he must give his portion to a man who has not worked for it, this too is futile and a great wrong.

I have seen that every labor and every skill which is done is the result of rivalry between a man and his neighbor. This too is vanity and striving after wind.

I returned, and saw under the sun, that the race is not to the swift, nor the battle to the strong, neither yet bread to the wise, nor yet riches to men of understanding, nor yet favour to men of skill; but time and chance happeneth to them all.

If the axe is blunt, and one doesn't sharpen the edge, then he must use more strength; but skill brings success.