R. Soloveitchik in The Lonely Man of Faith:

[M]an is faced with an exasperating paradox. On the one hand, he beholds God in every nook and corner of creation, in the flowering of the plant, in the rushing of the tide, and in the movement of his own muscle, as if God were at hand close to and beside man, engaging him in a friendly dialogue. And yet the very moment man turns to face God he finds Him remote, unapproachable… enveloped in the cloud of mystery, winking to him from the awesome ‘beyond.’ Therefore, the man of faith, in order to redeem himself from his loneliness and misery, must meet God at a personal covenantal level, where he can be near Him and feel free in His presence.”