'Searches' in the Bible

But he who searches the hearts knows what is the mind of the Spirit, because he intercedes for saints according to God.

but God has revealed to us by his Spirit; for the Spirit searches all things, even the depths of God.

and her children will I kill with death; and all the assemblies shall know that I am he that searches the reins and the hearts; and I will give to you each according to your works.