'Easy' in the Bible

“Then you said to me, ‘We have sinned against the Lord; we will indeed go up and fight, just as the Lord our God commanded us.’ And every man of you girded on his weapons of war, and regarded it as easy to go up into the hill country.

So Hezekiah answered, “It is easy for the shadow to decline ten steps; no, but let the shadow turn backward ten steps.”

A scoffer seeks wisdom and finds none,But knowledge is easy to one who has understanding.

For My yoke is easy and My burden is light.”