Adversity strengthens the foundations.

Sit-ups strengthen your abdominals.

And it was told the old man: Behold thy son Joseph cometh to thee. And being strengthened, he sat on his bed.

Strengthen your core.

America’s small businesses are essential to strengthening our national economy.

Algeria needs to strengthen its diplomatic ties with Russia and China.

And I will set a morsel of bread, and strengthen ye your heart, afterwards you shall pass on: for therefore are you come aside to your servant.

Granting, as Lenin wants, such absolute powers of a negative character to the top organ of the party, we strengthen, to a dangerous extent, the conservatism inherent in such an organ.

Algeria needs to strengthen its army.

Algeria needs to strengthen its defense systems.