Wings of Angels
Matthew Henry explains that the reference to the wings of the angels in Isaiah 6 is intended for our instruction, that we would approach and serve God aright.
Head Coverings
R.C. Sproul on Head Coverings
R.C. Sproul (1939–2017) argues that it is a moral duty for a woman to cover her head during public worship, and to do otherwise is to violate a biblical principle and sin against God.