Selaphiel means “the prayer of God” or “one who prays to God.” Selaphiel is known as the archangel of prayer. He helps people connect to God through prayer, giving them the focus they need to block out distractions and concentrate on praying.
Selaphiel motivates people to express their deepest thoughts and feelings to God in prayer, and to listen carefully for God’s responses. Selaphiel is also capable of drawing his strength from the faithful's prayer and thus could draw the faith people have in God.
While he appears to be a harmless archangel, he is far from it, as he wields a powerful sword that is capable of being powered also through the prayers that people put in by having faith in God and also himself. While stating himself, it's more of the belief in angels in general.