There is the case where a common person desires to trust that form is real, lasting, a refuge, under his/her control, or that feeling... , perception, formations, or that consciousness is real, lasting, a refuge under his/her control. Trusting so, many harmful actions are undertaken to maintain this illusion, many wrongdoings are undertaken to try to keep it as real, lasting, a refuge, and hold on control, and how ever hard the efforts might be, at times breaking appart and lose will nevertheless unavoidable. But as a common person does not know how the aggregates arise, and decay, right after decay another taking on, as if forgotten, or blind, will be undertaking quick.
But there is the case where a person has gained trust into the Sublime Buddha, the Dhamma and the Sangha of Noble Ones, and keeps steady in mind the necessary mistrust toward form, feeling, perception, formations and consciousness, when ever traced, when ever aware of the burden with it, uses it simply to develop the path to it's very end.
And there is the case where a person has gained freedom from any trust into form, feeling, perception, formations and consciousness, has gained dispatch of it, and simply carries the aggregates in proper and harmless way, and let the rest of fuel running out, share what ever might be left. Overcome all requirements for trust, independent, no more bond, a refuge for those gained relation toward right trust.
Yet, no requirements or any obligations, to trust rusty words, or what ever feeling, perception, formation or consciousness might arise on touch of the form.