Ultimate Reality is described by Gotama as the “unborn, unbecome, unmade, unconditioned.” He does not view it as a supreme being, but as Being itself: something permanent, unchanging, and endless bliss. The deathless.
But Ultimate Reality is described in Judaism, Christianity, and Islam as a personal God. In all three, he is portrayed as a male deity: Father, Ruler, and King. Only the mystics in these traditions dare to challenge this picture, because they have encountered this deity directly, whereas others know it only at second hand.
Advaita Vedānta has a helpful distinction. It divides Brahman with attributes from Brahman without attributes. The idea of a personal God is a useful fiction. It is hard for humans to relate to something so foreign as Ultimate Reality. Such a Wholly Other entity is beyond thought and imagination. It can be off-putting.
So we dress up God in an image and likeness we can relate to. But eventually you will have to experience Ultimate Reality for yourself. When you do, the fiction will dissolve. God is so far beyond us that all our language fails.
