One is spiritual when one is above our world.
“Our world” is the egoistic desire that constantly calculates self-benefit at the expense of others and nature. If we aim ourselves outwardly in order to bestow contentment upon others and nature, when the outcomes of our acts are unrelated to those who perform them—even indirectly—then we are considered spiritual.
In other words, being spiritual means attaining an intention to bestow to others and nature above our inborn desires to enjoy ourselves alone. With such attainment, we come to sense our eternal and perfect existence as a single soul, i.e., as a great desire that wishes to enjoy through the intention to bestow to the upper force of bestowal that creates and sustains life.
Such an existence is above time, space and motion. It is in no way linked to the sensation of the animate body, but is rather felt in a new inner space in our senses, in an intention to bestow that we develop and attain.