When I think about Ephesians 3 and not being afraid of approaching God, I think about two examples:  the Good Shepherd as he leads his sheep beside the still waters and the little children who came to be with Jesus.
Little children, babies and young animals….want to play and simply have their needs met.  As adults, we look “sideways” even at a blessing, wondering when the “real misery” will appear.  God has taken care of us so far, right?   He will continue to do so!  Let us trust and honor him by having “the faith of a little child.”