6 Bible Verses about toughness

And what the exceeding greatness of his power toward us who believe, according to the energy of his mighty power,

Thou therefore endure affliction, is a good soldier of Jesus Christ.

He saith to them, Because of the hardness of your hearts, Moses suffered you to put away your wives; but from the beginning it was not so.

Neither do men put new wine into old leather bottles, else the bottles burst, and the wine is spilled, and the bottles are destroyed, but they put new wine into new bottles, and both are preserved.

And no man putteth new wine into old leathern-bottles; else the new wine bursteth the bottles, and the wine is spilt, and the bottles are lost; but new wine must be put into new bottles.

And they were all filled with the Holy Ghost, and began to speak with other tongues, as the Spirit gave them utterance.