A quote from http://gnosticteachings.org/forum/question-about-developing-concentration.html#reply-11187:
Is the following true: a) meditation is a state where you can focus on something with help of imagination/(other perceptions) b) concentration is a skill to aid gaining and maintaining a focus in meditation c) one will gain new knowledge/... in a form of epiphany, ie. striking realisation.
In a sense, one can improve conditions of hearing Divine and gain skills to perceive Divine clearer, but Divine is always the one who decides when and what to feed to one.
That process is different from actually entering the state of meditation. The state of meditation occurs spontaneously whenever the consciousness is in the right condition. That cannot be forced or reached through effort or exertion.
Is the following true: a) meditation is a state where you can focus on something with help of imagination/(other perceptions) b) concentration is a skill to aid gaining and maintaining a focus in meditation c) one will gain new knowledge/... in a form of epiphany, ie. striking realisation.
In a sense, one can improve conditions of hearing Divine and gain skills to perceive Divine clearer, but Divine is always the one who decides when and what to feed to one.