Here is my best guess: 沉闷单调: monotonous and (deeply) depressing/dull 耶和华赐给我力量忍受沉闷单调的生活。: Jehovah gave us the strength to endure a dull and monotonous life/existence. Since you are referring to religion you might want to use 'bestow' instead of 'give', as it is a more formal way of stating it: Jehovah bestowed upon us the strength to endure a dull and monotonous existence. As always, let me know if I made mistakes!

dull

monotonous; tedious; repetitious

Oppressive monotony; oppression The Lord gives me strength to endure oppression.

Dark Panther 赞一个！ 很正确。