After the diaspora, God has promised to bring Israel back to the land He gave them. His promise is to unite the northern kingdom of Israel and the southern kingdom of Judah as one nation. And further to pour out His Spirit on the house of Israel.
In this passage, He is called the Sovereign Lord. Sovereign means above all things, superlative, absolute. Check out the complete definition of the adjective.
When a promise is based on the nature of God, it is infallible. It will come to pass if He says so.
The Sovereign Lord has promised compassion to His people. Compassion means that He is aware of the suffering of His people, and He wants to alleviate that suffering.
However, God gave man a free will - the ability to choose. When we freely choose to follow God and His precepts, the blessings of God can flow to us. That doesn't mean that our circumstances will be any different from those around us. It doesn't protect us from all the evil of the world.
It does assure us that whatever has been lost to us will be restored in eternity. It does mean that the fullness of God's Holy Spirit can rest upon us in the midst of suffering and loss. It does mean that we can experience the full comfort and assurance of God.
As You promised restoration to Israel, grant us that same restoration of fellowship with You. Help us to come into line with Your will that we may be in unbroken relationship with You, our Abba, Father.
In Jesus' most precious name.