Sometimes the salvation of another person feels urgent, or if not urgent, then still necessary. You may feel like you have to act regardless of any other considerations, given how urgent or necessary the call for this salvation is. The act becomes a number one priority, shutting out all other voices.
This has a tendency to cause you to act forcefully. You have to ignore anything that gets in the way of you saving the other person, including how they feel about it, any other goods in their life, any other possible ways they might be saved or need to be saved. There are reasons why they may see things differently than you, but you have to ignore that, and if those reasons connect to what their life is naturally, their flesh (who they are naturally) may have "limbs" that you would try to amputate so that they survive.
Ideally, everyone would understand when someone else came to save them. But if the threat is urgent enough, you have to save someone whether they understand or not. Maybe they will understand and be grateful to you later. What's important right now is making sure they don't die.
If your perspective is that you're trying to save someone from physical death, yanking them out of the way of, say, a speeding car without them understanding why does make some sense. You will succeed in saving them from (that) physical death, even if they never understand what you did.
But if you're trying to save someone from spiritual death, you can't force people. They themselves, in an uncoerced way, have to choose to affirm God's values. The understanding itself (intellectual and in their hearts) is what causes them to be saved.