Israel is being reproved for their disobedience and unbelief v.27-31. They have thought God had forsaken them in times of trouble, forgetting all the times in the past he had bailed the out of their disobedience and woe. For God is great, His power stretching to the ends of the earth never growing weary. Enough strength for Himself and all His chosen people. Even the strongest of men, left to their own powers can not make it without God’s help.
Today I offer John Gill’s commentary on this verse as I beleive it to be one of if not the fullest explanations on record: Gill’s Exposition of the Entire Bible
Wait I say, Wait upon the Lord. When was the last time you heard that cried from a pulpit? Oh that it would be more often, maybe just maybe “Christians” would do the things of God (that is those things full in line with the Holy Word of God) and not something they have concocted as being God’s will for them.
Waiting for Type A, hard charging, getter done personalities is difficult but NECESSARY. We need God, we need His direction for our course Proverbs 16:9 of life. Yet no matter how hard charging or how strong you are will all need refreshing Psalms 103:5.
Finally and most importantly, waiting on the Lord, Glorifies Him. Paul, in all his troubles 2 Corinthians 12:9 says “for my strength is made perfect in weakness”when we need God the most, and we are depending upon Him and Him alone for our help, that is when we are at our strongest and He is glorified.