(Matthew 23:9) This had to be meant in a spiritual sense since we all have earthly fathers, while our heavenly Father is a spirit to be worshiped in spirit and truth. (religion.blogs.cnn.com)
Jesus furthermore showed that he worshiped the Father, telling the Samaritan woman: «You worship what you do not know; we worship what we know... the hour is coming, and it is now, when true worshipers will worship the Father with spirit and truth, for indeed, the Father is looking for suchlike ones to worship him.» (religion.blogs.cnn.com)
10... «only a sound philosophy can help candidates for the priesthood to develop a reflective awareness of the fundamental relationship that exists between the human spirit and truth, that truth which is revealed to us fully in Jesus Christ.» (faith.org.uk)