I understand your point. But I would answer someone in a denomination the same. Form and plan are both appropriate to use in describing the conditions for salvation.<quoted text>
Here's an example of what I mean. When I reach the 'invitation' point of the message (real Biblical too isn't it), I don't say anything about "God's plan of salvation". I basically say that if anyone wants to become a Christian, here's what the Bible says we need to do. We talk of faith, repentance, confession, and baptism. The term plan of salvation is just 'churchspeak' for the initiated. Simply saying what needs to be said is good enough. How many times have we as the coc been attacked for using terms that we came up with? Why give the opposition fuel for the fire?
And during the invitation I don't usually hear plan of salvation either. But if it is used its biblical to say.