For thus says the Lord GOD, the Holy One of Israel: “In returning and rest you shall be saved;  in quietness and confidence shall be your strength.”  Isaiah 30:15

Would we be strengthened to do what is required of us and to bear what is laid upon us? It must be in quietness and in confidence; we must keep our spirits calm and sedate by a continual dependence upon God, and his power and goodness; we must retire into ourselves with a holy quietness, suppressing all turbulent and tumultuous passions, and keeping the peace in our own minds. And we must rely upon God with a holy confidence that he can do what he will and will do what is best for his people. And this will be our strength; it will inspire us with such a holy fortitude as will carry us with ease and courage through all the difficulties we may meet with.  

Matthew Henry on Isaiah 30:15

Actually, Isaiah 30:15 doesn’t end where I stopped it when I copied it above.  That’s the part of the verse most of us are familiar with. It goes on to say, “But you would not,” and the next few verses tell the story of what happens when we do not allow God to provide us with strength through our quiet confidence in Him.

Not good.

May it never be said of me, “But Sharon would not…”.  In quietness and confidence SHALL be my strength.

Blessed is the man who trusts in the LORD, and whose hope is the LORD.  Jeremiah 17:7

God is wise in heart and mighty in strength. Who has hardened himself against Him and prospered?    Job 9:4

My flesh and my heart fail, but God is the strength of my heart and my portion forever. Psalm 73:26

And the work of righteousness shall be peace; and the effect of righteousness quietness and assurance for ever. Isaiah 32:17