Srila Prabhupada: Because you are sincere, Krishna is giving you all facilities. The first requirement is sincerity to become the Lord's servant. We don't have to go far. Once qualified, we can talk to the Lord from within. The Lord is beyond our sensual perception, but He can reveal Himself to us. If you are a true lover of Godhead, you can see God everywhere, in your heart and also on the outside. But the Lord reveals Himself only through the bhakti-yoga process.
Hare Krishna Explosion Ch16: Krishna - the flower bearing spring