John 6:44 - Jesus said "No one can come to me unless the Father who sent me draws him. And I will raise him up on the last day."
John 3:19-21 "And this is the judgment: the light has come into the world, and people loved the darkness rather than the light because their works were evil. For everyone who does wicked things hates the light and does not come to the light, lest his works should be exposed. But whoever does what is true comes to the light, so that it may be clearly seen that his works have been carried out in God.”
The Bible teaches us clearly that man is not able to come to Christ outside of God effectually drawing him (John 6:44) yet this does NOT remove man's responsibility to do so. How can this be the case? John Piper explains using a very helpful illustration: