And truly, if they had been mindful of that country from whence they came out, they might have had opportunity to have returned. Hebrews 11:15

It is a wonder of wonders that we have not gone back to the world, with its sinful pleasures and its idolatrous customs. When I think of the strength of divine grace, I do not marvel that saints should persevere; but, when I remember the weakness of their nature, it seems a miracle of miracles that there should be one Christian in the world who could maintain his steadfastness for a single hour. It is nothing short of Godhead’s utmost stretch of might that keeps the feet of the saints and preserves them from going back to their old unregenerate condition. We have had opportunities to have returned. My brethren, we have such opportunities in our daily calling. Some of you are engaged in the midst of ungodly men, and those engagements supply you with constant opportunities to sin as they do, to fall into their excesses, to lapse into their forgetfulness of God, or even to take part in their blasphemies. Oh, have you not often strong inducements, if it were not for the grace of God, to become as they are? Or, if your occupation keeps you alone, yet, my brethren, there is one who is pretty sure to intrude upon our privacy, to corrupt our thoughts, to kindle strange desires in our breasts, to tantalise us with morbid fancies, and to seek our mischief. The Tempter he is, the Destroyer he would be, if we were not delivered from his snares. Ah, how frequently will solitude have temptations as severe as publicity could possibly bring. There are perils in company, but there are perils likewise in our loneliness. We have many opportunities to return…. Opportunities to return! Ah! Who that knows himself does not find strong, incentives to return. Ah! how often will our imagination paint sin in very glowing colors, and, though we loathe sin and loathe ourselves for thinking of it, yet how many a man might say, “had it not been for divine grace, where should I have been? -for my feet had almost gone, my steps had well-nigh slipped.” C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/1030.cfm