God is not bound by his Word in that he cant choose to recant.But that presupposes that God is limited by time as the Mohammedans believe Allah to be. To God Time is not serial so if He says He will do something then He says it in and to past present and future. Allah, being bound by serial time can change his mind as he sees how things develop. That is much too limited a concept of the Deity for Christians.
God can do everything, but He is faithful and true. That is why we can rely on His promises and laws.
He is loving so He makes exceptions and changes in favor of His creatures.
Everything except the first sentence makes perfect sense.