Yes.
However, we need to bear in mind that a new convert is mostly ignorant of the full impact of what they are receiving.
Yes, a new believer, is a empty vessel who needs to be filled with Paul's doctrine, or they will end up, chasing false gospels like 'universalism" or they will be mind captured by the Mormons or Calvinism or the MaryCult.....for example.
What they dont understand is that once you become a Christian, then the Devil sends in the artillery.
Whereas before it was fornication and good sinful times..they were chasing for Him.......but now that they are God's property, the Devil gets after them with the Heretics, and the half truths, and the false gospels, and the condemnation......and once he has ruined your faith, and has you captured by some heresy-cult theology......... then he just moves onto the next one, because you are finished.......you're deceived.
The MOST Dangerous time for a new Christian, is that first year subsequent to their Salvation......as the Devil is going to bring to them what is going to ruin their Christianity........tho he can't ever end it.
See, the devil has lost the born again........He can't have them back, as they have a NEW
Spiritual FATHER ...but, he can blind their mind and soon have them on forums.....teaching a false gospel and other false theology along with the false gospel.