This man is being reverent.
The definition of reverent is feeling awe and respect.
An example of a reverent person is someone who constantly gives thanks and praise to God.
feeling, showing, or characterized by reverence
Origin of reverentLate Middle English ; from Classical Latin reverens, present participle of revereri: see revere
Marked by, feeling, or expressing reverence.
Origin of reverentMiddle English, from Old French, from Latin reverēns, reverent-, present participle of reverērī, to revere; see revere1.