I absolutely love these verses :
11 Not that I speak in respect of want: for I have learned, in whatsoever state I am, therewith to be content.
12 I know both how to be abased, and I know how to abound: every where and in all things I am instructed both to be full and to be hungry, both to abound and to suffer need.
13 I can do all things through Christ which strengtheneth me.
Christ strengthens our inner man, the spirit.
“That he would grant you, according to the riches of his glory, to be strengthened with might by his Spirit in the inner man;” Ephesians 3:16
Acts 20:32 And now, brethren, I commend you to God, and to the word of his grace, which is able to build you up, and to give you an inheritance among all them which are sanctified.