God of the New Israel

“It shall come to pass that before they call, I will answer; and while they are still speaking, I will hear." Isaiah 65.24

The promises of God are clear, but subject to conditions. They are like an exchange...
If there is obedience, then, in return, there are blessings; if there is disobedience, then no deal.
In reality, this "exchange" is nothing more than an expression of faith and trust in Him.

Accursed exchange

"Weep not for the dead, nor bemoan him; weep bitterly for him who goes away, for he shall return no more, nor see his native country." Jeremiah 22.10 

The prophecy talks about the children of Israel who forsook their covenant with the Lord. But it also goes for all those who, one day experience from the power of God but exchanged it for the passions and wretchedness of this dark world.