'Within' in the Bible

I will stand at my guard postAnd station myself on the tower;And I will keep watch to see what He will say to me,And what answer I will give [as His spokesman] when I am reproved.

Lo, a presumptuous one! Not upright is his soul within him, And the righteous by his stedfastness liveth.

Woe to [him who] says to the wood, 'Wake up!' [And] to a lifeless stone, 'Arise!' Can he teach? Look, it is covered [with] gold and silver, and there is no breath within it.

I heard, and I trembled within;my lips quivered at the sound.Rottenness entered my bones;I trembled where I stood.Now I must quietly wait for the day of distressto come against the people invading us.