'Appearance' in the Bible

Six days later, Jesus took Peter, James, and John and led them up a high mountain to be alone with him. His appearance was changed in front of them,

They came and told him, "Teacher, we know that you are sincere. You don't favor any individual, because you pay no attention to external appearance. Rather, you teach the way of God truthfully. Is it lawful to pay taxes to Caesar or not? Should we pay them or shouldn't we?"

who devour the houses of widows and pray lengthy [prayers] for the sake of appearance. These will receive more severe condemnation!"