I'm affraid you misunderstood his repentance article, or at least didnt' read the whole thing. He is clearly saying that you can still sin once you are saved and you won't lose salvation.
Biblical Repentance
So does a person need to REPENT to be saved? Of course, but not the type of repentance that the Lordship Salvation crowd is propagating. There is a common misunderstanding about Biblical repentance. Many sincere people believe that repentance means to "cease from committing sin," but it does not. Ceasing from sin is a by product of repentance. Doing righteousness is also a by-product of repentance. Repentance is "a change of mind" that should eventually lead to a changed life. For some people, it is right away; yet other may take much longer. Some people are very slow to change, but ultimately they become the best Christians, because they are... slow to change. Everybody responds differently. It is one's attitude towards sin and the Savior that first change at the time of salvation, not necessarily the departing from sin. Repentance begins in the heart, not in our lifestyle.
Biblical repentance is a "turn around" (U-TURN). Salvation does NOT hinge on departing from our sins, but rather upon getting our sins forgiven. 1st Peter 2:2 speaks of growing in the Lord... as new born babes. Surely, you wouldn't expect a little baby to walk around the house, let alone run? When a lost sinner comes to Christ for salvation, the salvaging process only begins. Salvation is more than being saved. When we receive Jesus Christ as our personal Savior, we instantly become a child of God and our name is written in Heaven. But now the lifelong process of growing in the Lord begins. Just as a baby is physically born into the world and grows for the rest of his or her life, so does a spiritually born (i.e., born again) person grow throughout the remainder of their life. Sadly, many believers are midgets, suffering from stunted growth. Every Christian needs the milk of God's Word to grow into a healthy mature believer.
Jesus Promised Never to Turn Anyone
Jesus clearly said that he WILL forgive all who come to Him...