John Dummelow's Commentary on the Bible - Isaiah 40:1-31
The Proclamation of Deliverance1, 2. The theme of the prophecies following: the period of Zion’s trouble and affliction is over. 3-26. Celestial voices give the message of restoration to God’s people, who are encouraged by the thought of His infinite power. 27-31. Trust in Jehovah is, therefore, the source of true strength.2. Warfare] RM ’time of service,’ i.e. enforced service and hardship: cp. Job 7:1. Double] i.e. double (ample) penalty (Jeremiah 17:18), in the sufferings of the exile.3-5. A... read more
Expository Notes of Dr. Thomas Constable - Isaiah 40:30-31
Circumstances may overcome even the strongest young people in their prime, either through lack of inner resources or because of the hardness of life. Yet those who continually rest on, trust in, and wait for Yahweh will receive renewed and different-divine-strength. The Hebrew verb translated "gain" suggests an exchange of strength, our inadequate strength for His abundant strength."This expression ["those who wait for the Lord"] implies two things: complete dependence on God and a willingness... read more