Because god knows the future, we can count on all the prophecies to eventually be fulfilled.
24+ God Knows The End From The Beginning
Gif. 10 i declare the end from the beginning, and ancient times from what is still to come. Therefore he operates in eternity while we operate in a earthly dimension which is limited by time.
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That is, god has and must have an ultimate end. The end from the beginning since we know that god's plan and purpose was revealed after the cross yet hidden before the cross, we know that we are looking for something which may not be fully visible from just one or two scriptures. Because god knows everything that will happen, this allows him to predict the future ahead of time.
The purposes of god must be ultimate and proximate.
I am god, and there is none like me. The purposes of god must be ultimate and proximate. 9 what profit hath he that worketh in that wherein he laboureth? I am god, and there is none like me.