"Every knee shall bow to me." Every knee! We will all get there. We can't even imagine all the ways that people find Christ. Let them. If they need help, help. But no stumbling blocks. Incidentally prayer is very effective and not intrusive, it just may not have its effect on your timetable.

Romans 14:10-13
Why do you pass judgment on your brother? Or you, why do you despise your brother? For we will all stand before the judgment seat of God;
for it is written,
“As I live, says the Lord, every knee shall bow to me,
and every tongue shall confess to God.”
So then each of us will give an account of himself to God.
Therefore let us not pass judgment on one another any longer, but rather decide never to put a stumbling block or hindrance in the way of a brother.
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