I just had to repeat this comment that I posted here. It is the Holy Spirit.
"God has just done too good of a job of hiding for me to have any belief in him."
God came out to play when Jesus was incarnate. After He left to the Father, the Spirit was given to the Church that He established. Want evidence? Just look at the blog you're on now. God's evidence is the presence of the Mystical Body of Christ (the Church) bringing you the Good News and a Doctor for what ails you and the world. It's a place for sinners to receive absolution for their sins.
God bless you Anonymous.