That is truth. Confessing Christ with the mouth is not merely a statement but a confession by which you are claiming through the power of the Spirit of truth, which if you possess, you are saved by grace already. Most won't admit that it is the Spirit of God within us that we are able to have true saving faith, understanding of the truth, God's righteousness, and spiritual fruits, etc. The sovereignty of God is shunned to fit what most want to conform him to coincide with what they want Him to be. My salvation comes from the same God who commanded Israel to attack, kill all including children, and take the city. When you thwart the character of God you end up worshipping a false God to an image of your acceptance. Too many professing Christians I believe are truly not convinced of the things that that the Spirit would convince them of, especially the truth.A person is not saved because they gave a canned prayer, a 'repeat after me', &c., but because a sovereign God chose them from before the foundation of the world, gave their sins unto His Christ, who redeemed them when He shed His blood for them.
Now, when you see someone truly repenting of their sins before the Lord, you see someone who God has already wrought grace into their heart, which is what truly makes them call out to Him in the same manner the tax collector did when he said ‘God, be merciful to me, the sinner!’[Luke 18:13b]