James 4:8 Draw nigh to God, and he will draw nigh to you. Cleanse your hands, ye sinners; and purify your hearts, ye double minded.
I’ve known my wife for almost thirteen years and it would seem that I know her pretty well. But every once in a while, she says or does something that surprises me — and I think to myself "Wow, I guess I didn’t know her as well as I thought!" The more time I spend with her, the more I get to know her — her heart, her character — the more we become intimate.
The same is true with any relationship but especially our most important relationship, that is, our relationship with the Lord.