It can readily be deduced from this text that Jesus Christ is a divine self. He is the One who rewards people according to their deeds. He is our Judge. We are accountable to God because He is our Creator.
Furthermore, Christ's right and authority to judge us is rooted in His omniscience. He is divine in the same sense as the Father and Holy Spirit are divine. He is God incarnate. The Lord has fully comprehensive knowledge of everything.
Jesus Christ searches the hearts and minds of people. He knows everything about us all. Another point which has significance here is that Christ in this passage quotes Jeremiah 17:10. God Himself in the verse from the Book of Jeremiah is speaking. Nonetheless, Christ makes a formal application of those exact attributes to Himself.
Thus, we see that from Revelation 2:23 that Jesus Christ is God. He is not a created being. Noteworthy cross references for this passage would include 1 Chronicles 28:9 and Matthew 9:4.