Matthew Henry and Vernon McGee on the Perseverance of the Saints
Part of Matthew Henry's commentary in Hebrews 6 writes, "This therefore is no proof of the final apostasy of the true saints. These (true believers) indeed may fall frequently and foully but yet they will not totally nor finally from God; the purpose and the power of God, the purchase and the prayer of Christ and the promise of the Gospel the everlasting covenant that God has made with them, ordered in all things and sure, the indwelling of the Spirit and the immortal seed of the Word these are their security. But the tree that has not these roots will not stand." which can be found in Page 2389 of the Matthew Henry Commentary on the Whole Bible.
Dr. J. Vernon McGee another Protestant preacher wrote on the Prodigal Son in Luke 15:11-32, "Somebody is immediately going to say, 'Well this is the fellow who is the sinner and he is going to get saved.' No I'm sorry to tell you that such is not the picture that's given to us here. This is not the picture of the sinner that gets saved. May I say unto you and say it very carefully that when this boy was living at home with the father and was in fellowship with him, he was a son and there was no question about that. When this boy got to the father country and was out there throwing his money around, he was still a son. That is never questioned. And when this boy went down and hit bottom and was out there with the pigs, he was not a pig, he was a son. In this story that our Lord Jesus told there was never any question as to whether the boy was a son or not. He was a son all the time... if you're God's child, you can't sin and get away with it. You may even go to the pigpen but my friend, you can never enjoy it. If you're a son of the Father, there'll come a day when you're going to say, 'I will arise and go to my Father and you will go."
It's something how I'm seeing groups that claim to be Protestant but have actually disregarded the teaching of the perseverance of the saints to be Biblical. Listen, it's plain and simple to see. Either you are saved or not saved... do they even read 1 John 2:19 that distinguishes true and false converts. True converts are miserable in sin therefore they cannot sin all they want. If these conditional security crowd will even say that Solomon lost his salvation, why do they still read the Book of Proverbs and Ecclesiastes? Clearly, it's sheer hypocrisy. So many people I've known have taught conditional security yet live wildly like the rest of the world while many who rely on the grace of God and not of themselves, end up living well. True believers endure to the end, false ones fall away proving they were never saved to start with.