Do not be amazed that I said to you, 'You must be born again.' John 3:7
" "The wind blows where it wishes, and you hear its sound, but you do not know where it comes from or where it is goes. So it is with everyone who is born of the Spirit."
"Nevertheless, it is a change that is known and felt--known by works of holiness and felt by a gracious experience. This great work is supernatural. It is not an operation that a man performs for himself...
"O Lord Jesus, the everlasting Father, You are my spiritual Parent; if Your Spirit had not breathed into me the breath of a new, holy, and spiritual life, I would still be dead in trespasses and sins.'
"My heavenly life is wholly derived from You; to You I ascribe it. My life is hidden with Christ in God.' It is no longer I who live, but Christ who lives in me." May the Lord grant us assurance on this vital point, for to be unregenerate is to be unsaved, unpardoned, without God, and without hope."
Read Be Sure, by Alistair Begg at One Place