Attracted to Jesus: Nicodemus

What are the attributes of Jesus which make Him attractive to sinners so that they come to believe on Him for salvation?

In the case of Nicodemus, on the surface it seems it was the miracles which Jesus performed which drew him to Jesus at night. But there is much more going on beneath the surface, in the heart of Nicodemus, which is revealed in his conversation with Jesus in John 3. Jesus addresses the deepest longings of our hearts even when we think we are drawn to Him for other reasons.