'Weariness' in the Bible

All things are full of weariness; man cannot utter it : the eye is not satisfied with seeing, nor the ear filled with hearing.

And furthermore, my son, be admonished: of making many books there is no end; and much study is a weariness of the flesh.

Ye say also, Behold, what a weariness is it! and ye have snuffed at it, saith Jehovah of hosts; and ye have brought that which was taken by violence, and the lame, and the sick; thus ye bring the offering: should I accept this at your hand? saith Jehovah.