though he stumble, he will not fall,
for the LORD upholds him with his hand.
I guess it would be important to understand the difference between a stumble and a fall. I’ve done both. When I stumble, it startles me for a moment. My heart rate goes up, my muscles jump to attention. I look around to see if anyone saw it, whether it counts or not. Sometimes I feel stupid and I’ve stumbled because I didn’t pay attention or was doing something I shouldn’t have. Sometimes I’m thankful and my stumbling makes me more mindful of my steps as I continue. I stumble a lot; I’ve got a weak ankle and it turns frequently. I drop just a bit and catch myself.
Sometimes I fall. When I fall, it doesn’t even matter if anyone is looking. When I fall it usually hurts, and sometimes leaves a mark. Usually my clothes get dirty or torn. If I’m going somewhere, often a fall will derail those plans or at least severely alter them. Sometimes when I fall I try things in desperation to keep myself upright and that usually ends in disaster; I pull something or someone else down and make a mess.
God tells us that if He delights in our ways, we may stumble, but we will not fall. I know what it is like to fall, and I sure want to stay on my feet; even if I trip up from time to time—it’s just not the same as falling.