Perseverance of the Saints and its meaning

"Of course, the perseverance of the saints does not mean sinless perfection or a life free from struggle and temptation. Eradication of our corrupt nature is a long and difficult process and will not be completed until we are glorified. As long as the present life continues, we may become careless of the means of grace, our hearts may be temporarily hardened, we may fall into grievous sins. Thus we may harm others and bring temporal punishment upon ourselves. God does not promise to carry us to the skies on flowery beds of ease. But praise his name, he promises to carry, drag, or push us there. So, and only so, we arrive." - Gordon H. Clark, What Do Presbyterians Believe?