Obedience unites us so closely to God that it in a way transforms us into Him, so that we have no other will but His. If obedience is lacking, even prayer cannot be pleasing to God.
Thomas AquinasLove must precede hatred, and nothing is hated save through being contrary to a suitable thing which is loved. And hence it is that every hatred is caused by love.
Thomas AquinasFuture contingents cannot be certain to us, because we know them as such. They can be certain only to God whose understanding is in eternity above time. Just as a man going along a road does not see those who come after him; but the man who sees the whole road from a height sees all those who are going along the road at the same time.
Thomas Aquinas