known but to God

Today I was able to visit the Tomb of the Unknowns (also known as the Tomb of the Unknown Soldier) at Arlington National Cemetery.

The inscription on the tomb notes that the soldiers buried in the tomb are "known but to God".

Are we as followers of Jesus comfortable doing things "known but to God"? I think that most of us don't seek out lots of attention or publicity, but it's hard to have a level of confidence that doesn't require affirmation from others. Also we have to be careful not to be too secretive because our lives are testimonies.

Perhaps the question isn't about how many people know, but what is our motivation. Do we do good things to look good or please others, or are we truly motivated by our love for Jesus?