। ॥ ४१ ॥
In plain words
The sentences of śruti point at one thing only — oneness — and through them the Self is being lit up, ceaselessly, without a break. Even so, people who lack a teacher's grace cannot bring it into direct sight.
Close to the Sanskrit
Although the Self is ceaselessly being revealed by the sentences of śruti whose whole aim is oneness, it cannot be made directly present by persons devoid of the teacher's grace.