The blue represents the first step of obedience in a
believer, the waters of Christian baptism.
"Repent and be baptized, every one of you,
in the name of Jesus Christ for the forgiveness of your sins. And you will receive the
gift of the Holy Spirit" Acts 2:38
"Look, here is water. Why shouldn't I be
baptized?" Acts 8:36
God gives us the gift of His Holy Spirit to guide us
and as a deposit guaranteeing our eternal life.