"It is a light thing"

1. 2 Kgs. 20: 10
     10 And Hezekiah answered, It is a light thing for the shadow to go down ten degrees: nay, but let the shadow return backward ten degrees.
2. Isa. 49: 6
     6 And he said, It is a light thing that thou shouldest be my servant to raise up the tribes of Jacob, and to restore the preserved of Israel: I will also give thee for a light to the Gentiles, that thou mayest be my salvation unto the end of the earth.
3. 1 Ne. 21: 6
     6 And he said: It is a light thing that thou shouldst be my servant to raise up the tribes of Jacob, and to restore the preserved of Israel. I will also give thee for a light to the Gentiles, that thou mayest be my salvation unto the ends of the earth.