This is how the JW's are baptized.
Watchtower - 1985 Jun 1 p.30
"The first question is:
On the basis of the sacrifice of Jesus Christ, have you repented of your sins and dedicated yourself to Jehovah to do his will
If anyone dedicates their life to serving Jehovah as did Christ, then they are turning away from themselves and their former life of self will and living for God's will as did Jesus. Having turned away from self-will in favor of God's will they have in effect died with Christ to their old self and risen with Christ to walk as he walked. Peter then tells us that because of that choice and following up on that choice in our actions we are able to have a good conscience as we stand and walk before God in the footsteps of his Son. And that is why it is the good conscience which saves us, because we get that good conscience by having been truthful about rejecting our old man and living for the example of Christ the man in his footsteps. And so long as we are doing that we are doing what is necessary to receive our salvation from God. So indeed, although it did not excuse us from having to put away the filth of the flesh, it is the good conscience which has enabled us to endure the putting away of that filth of the flesh and by that the good conscience is saving us. For it keeps us continuing on until, "Receiving the end of your faith, even the salvation of your souls." 1 Peter 1:9
Which leads me to your next point as I can see that the two things you mentioned are tied together.
The second is:
Do you understand that your dedication and baptism identify you as one of Jehovah's Witnesses in association with God's spirit-directed organization? Having answered yes to these questions, candidates are in a right heart condition to undergo Christian baptism."
Consider this: Let us say that Jehovah's Witnesses mistakenly preached that only the 144,000 die and are buried with and rise again with Christ. In other words that only the 144,000 were baptized into Christ's death.
If (though differing from that small error in their words) the spirit of what they teach was correct and what they actually were teaching was to reject ones old self-will (dying with Christ) and to live and walk after the model of Christ (rising with Christ as a new man), then does it really matter that they stumbled a bit in their wording?
Surely you don't believe that God's spirit is dependent upon man's having to be perfect in every minor thought and word before it can ride it's way through upon the scriptural based counsel? So long as the spirit of what they say is correct then the actions that spirit promotes will also be correct. But those who are hastily prone to judgment, having not taken to heart Jesus' words at Matthew 7:1-5, cannot see that they make a mountain out of a mole hill by viewing others so superficially rather than understanding them by means of matured spiritual wisdom.
There may be a disease being spread all through the community of a town and the town's medical advisers may not really fully understand that disease and so they describe it wrong. Would that matter if the things they advised the people to do just happened to be the right things to do in order to avoid the disease? If man is capable of giving sound counsel amidst having some of his understanding wrong, how much more do you think the holy spirit on God's word is able?
Many are fanatically using 1 John 4:1 but not understanding it: "Beloved, believe not every spirit, but try the spirits whether they are of God: because many false prophets are gone out into the world."
As one grows in spiritual wisdom and understand more, one sees in behind the superficial things so as to be able to really know if the counsel, though perhaps delivered imperfectly of humans, is in conflict with the spirit in God's word or in harmony with the spirit in God's word.
A false prophet preaches against the spirit of God's word. It is not about being perfect in every minor thought and word. It is about the spirit conveyed as to whether that spirit promotes God's ways in the lives of people or whether that spirit defies God's ways to the people.
More need to take Matthew 7:1-5 more seriously and lighten up, and also cloth themselves with the humility to allow themselves to receive a bit of correction even from ones whose words might be found to have a few flaws.
A truly meek person can learn from even a child.