From Teaching 22

36. Practice the silence which favours the spirit so that he will find his God; that silence is like a fountain of knowledge and all who penetrate into it, will be filled with the clearness of My wisdom. The silence is like a closed place with indestructible walls, to which only the spirit has access. Man constantly carries within his innermost, the knowledge of the secret place in which he can communicate with God.

37. You can communicate with your Father wherever you are, for the place is of no consequence, it can be at the top of the mountain or if you find yourself in the depth of a valley, in the commotion of a city, in the peace of your home or in the midst of a struggle; if you seek Me in the interior of your sanctuary in the midst of the deep silence of your elevation, the doors of the universal and invisible temple will be opened instantly so that you feel yourself truly in the house of the Father, which exists in each spirit.

38 When the pain of your ordeals overwhelm you and your afflictions of life annihilate your senses, if you experience an intense desire to obtain a little peace, retire to your chamber or seek the silence, the solitude of the countryside; there elevate your spirit guided by the conscience, and enter into meditation. The silence is the kingdom of the spirit, a kingdom that is invisible to human eyes.

39. At the moment of penetrating the spiritual ecstasy, the awakening of the superior senses is obtained, intuition surges, the inspiration glows, the future is perceived and the spiritual life touches what is distant, and makes possible what before seemed impossible.

40. If you wish to penetrate the silence of this sanctuary, of this Ark, you yourselves should be the ones to prepare the way, for only with true purity will you be able to penetrate it.

66. Here I am, disciples, showing you how to develop your spirit, so that you will get to know the ecstasy of the spirit, because the voice of the conscience is clearly heard within him, and what is impenetrable becomes transparent, and the darkness is illuminated.

67. That state of elevation cannot be a privilege only for some beings; it is a gift that is latent in every spirit, but in past times I have availed Myself of those who have known how to make use of that grace. In order for the ecstasy to be perfect, you first have to pass through a meditative withdrawal, as the just people of the first eras did. That is why Jesus taught you these things during the Second Era, when He retreated to the desert for forty days before beginning to preach the good news, to withdraw Himself in solitude, meditate, and comfort Himself in the Almighty.